NL Industries (NL) 10-K6 Mar 242023 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2023	Feb. 29, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	1-640
Entity Registrant Name	NL INDUSTRIES, INC.
Entity Incorporation, State or Country Code	NJ
Entity Tax Identification Number	13-5267260
Entity Address, Address Line One	5430 LBJ Freeway, Suite 1700
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75240-2620
City Area Code	(972)
Local Phone Number	233-1700
Title of 12(b) Security	Common stock
Trading Symbol	NL
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 46.7
Entity Common Stock, Shares Outstanding		48,833,484
Documents Incorporated by Reference [Text Block]	The information required by Part III is incorporated by reference from the Registrant’s definitive proxy statement to be filed with the Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this report.
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Dallas, Texas
Entity Central Index Key	0000072162
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 111,522	$ 68,868
Restricted cash and cash equivalents	2,917	2,864
Marketable securities	53,149	70,164
Accounts and other receivables, net	17,101	17,870
Receivables from affiliates	628	636
Inventories, net	30,712	31,290
Prepaid expenses and other	2,235	2,276
Total current assets	218,264	193,968
Other assets:
Restricted cash and cash equivalents	26,943	25,770
Note receivable from affiliate	10,600	13,200
Marketable securities	18,194	26,350
Investment in Kronos Worldwide, Inc.	247,582	292,206
Goodwill	27,156	27,156
Other assets, net	2,060	2,523
Total other assets	332,535	387,205
Property and equipment:
Land	5,390	5,390
Buildings	23,239	23,181
Equipment	74,315	74,113
Construction in progress	676	722
Property and equipment, gross	103,620	103,406
Less accumulated depreciation	77,757	74,712
Net property and equipment	25,863	28,694
Total assets	576,662	609,867
Current liabilities:
Accounts payable	3,148	3,537
Accrued litigation settlement	11,830	11,830
Accrued and other current liabilities	13,182	13,393
Accrued environmental remediation and related costs	1,655	2,627
Payables to affiliates	634	665
Total current liabilities	30,449	32,052
Noncurrent liabilities:
Long-term debt from affiliate	500	500
Accrued environmental remediation and related costs	89,451	89,731
Long-term litigation settlement	16,122	27,427
Deferred income taxes	41,733	50,119
Accrued pension costs	1,571	3,012
Other	5,074	4,279
Total noncurrent liabilities	154,451	175,068
NL stockholders' equity:
Preferred stock, no par value; 5,000 shares authorized; none issued
Common stock; $.125 par value; 150,000 shares authorized; 48,816 and 48,833 shares issued and outstanding	6,103	6,101
Additional paid-in capital	298,868	298,598
Retained earnings	284,462	300,442
Accumulated other comprehensive loss	(219,621)	(222,991)
Total NL stockholders' equity	369,812	382,150
Noncontrolling interest in subsidiary	21,950	20,597
Total equity	391,762	402,747
Total liabilities and stockholders' equity	576,662	609,867
Commitments and contingencies (Notes 13 and 16)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
CONDENSED CONSOLIDATED BALANCE SHEETS
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.125	$ 0.125
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	48,833,000	48,816,000
Common stock, shares outstanding	48,833,000	48,816,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Net sales	$ 161,287	$ 166,562	$ 140,815
Cost of sales	112,068	117,763	98,066
Gross margin	49,219	48,799	42,749
Selling, general and administrative expense	23,784	23,363	22,223
Other operating income (expense):
Corporate expense	11,306	11,705	10,035
Income from operations	14,129	13,731	10,491
Equity in earnings (losses) of Kronos Worldwide, Inc.	(15,003)	31,873	34,323
Other income (expense):
Interest and dividend income	9,636	3,797	1,603
Marketable equity securities	(8,156)	(8,085)	16,229
Loss on pension plan termination	4,911
Other components of net periodic pension and OPEB cost	(1,368)	(1,134)	(665)
Interest expense	(746)	(941)	(1,142)
Income (loss) before income taxes	(6,419)	39,241	60,839
Income tax expense (benefit)	(7,001)	2,785	7,479
Net income	582	36,456	53,360
Noncontrolling interest in net income of subsidiary	2,890	2,612	2,172
Net income (loss) attributable to NL stockholders	$ (2,308)	$ 33,844	$ 51,188
Amounts attributable to NL stockholders:
Net income (loss) per basic share	$ (0.05)	$ 0.69	$ 1.05
Net income (loss) per diluted share	$ (0.05)	$ 0.69	$ 1.05
Weighted average shares outstanding - basic	48,827	48,811	48,797
Weighted average shares outstanding - diluted	48,827	48,811	48,797

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 582	$ 36,456	$ 53,360
Other comprehensive income (loss), net of tax:
Currency translation	1,072	(6,956)	(1,660)
Defined benefit pension plans	2,484	24,611	12,236
Marketable debt securities	53	(50)
Other postretirement benefit plans	(221)	160	(143)
Total other comprehensive income, net	3,388	17,765	10,433
Comprehensive income	3,970	54,221	63,793
Comprehensive income attributable to noncontrolling interest	2,908	2,612	2,172
Comprehensive income attributable to NL stockholders	$ 1,062	$ 51,609	$ 61,621

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Noncontrolling interest in subsidiary	Total
Beginning Balance at Dec. 31, 2020	$ 6,098	$ 299,093	$ 257,875	$ (251,189)	$ 23,472	$ 335,349
Net income			51,188		2,172	53,360
Other comprehensive income, net of tax				10,433		10,433
Issuance of NL common stock	2	99				101
Dividends paid			(11,712)			(11,712)
Dividends paid to noncontrolling interest					(1,324)	(1,324)
Other, net		583			(1,819)	(1,236)
Ending Balance at Dec. 31, 2021	6,100	299,775	297,351	(240,756)	22,501	384,971
Net income			33,844		2,612	36,456
Other comprehensive income, net of tax				17,765		17,765
Issuance of NL common stock	1	119				120
Dividends paid			(30,753)			(30,753)
Dividends paid to noncontrolling interest					(4,304)	(4,304)
Other, net		(1,296)			(212)	(1,508)
Ending Balance at Dec. 31, 2022	6,101	298,598	300,442	(222,991)	20,597	402,747
Net income			(2,308)		2,890	582
Other comprehensive income, net of tax				3,370	18	3,388
Issuance of NL common stock	2	98				100
Dividends paid			(13,672)			(13,672)
Dividends paid to noncontrolling interest					(1,555)	(1,555)
Other, net		172				172
Ending Balance at Dec. 31, 2023	$ 6,103	$ 298,868	$ 284,462	$ (219,621)	$ 21,950	$ 391,762

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Dividends paid per share	$ 0.28	$ 0.63	$ 0.24

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 582	$ 36,456	$ 53,360
Depreciation and amortization	3,973	3,977	3,839
Deferred income taxes	(7,308)	2,291	7,453
Equity in (earnings) losses of Kronos Worldwide, Inc.	15,003	(31,873)	(34,323)
Dividends received from Kronos Worldwide, Inc.	26,766	26,766	25,356
Marketable equity securities	8,156	8,085	(16,229)
Loss on pension plan termination	4,911
Benefit plan expense greater (less) than cash funding	461	130	(220)
Noncash interest income	(3,591)	(267)
Noncash interest expense	695	908	1,116
Other, net	247	(21)	(31)
Change in assets and liabilities:
Accounts and other receivables, net	754	(2,275)	(4,488)
Inventories, net	333	(5,832)	(7,479)
Prepaid expenses and other	42	353	(991)
Accounts payable and accrued liabilities	(12,624)	(10,398)	(9,386)
Accounts with affiliates	578	(662)	279
Accrued environmental remediation and related costs	(1,252)	(582)	(476)
Other noncurrent assets and liabilities, net	(723)	(125)	(171)
Net cash provided by operating activities	37,003	26,931	17,609
Cash flows from investing activities:
Capital expenditures	(1,130)	(3,695)	(4,094)
Purchases	(61,366)	(69,959)
Proceeds from maturities	82,000
Note receivable from affiliate:
Collections	30,500	29,800	40,600
Loans	(27,900)	(24,300)	(29,800)
Other, net		284	2
Net cash provided by (used in) investing activities	22,104	(67,870)	6,708
Cash flows from financing activities:
Dividends paid	(13,672)	(30,753)	(11,712)
Subsidiary treasury stock acquired		(1,744)	(1,311)
Dividends paid to noncontrolling interests in subsidiary	(1,555)	(4,304)	(1,324)
Net cash used in financing activities	(15,227)	(36,801)	(14,347)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	43,880	(77,740)	9,970
Balance at beginning of year	97,502	175,242	165,272
Balance at end of year	141,382	97,502	175,242
Supplemental disclosures - cash paid (received) for:
Interest	50	34	26
Income taxes, net	$ (300)	$ 1,140	$ 32

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2023
Summary of Significant Accounting Policies
Summary of significant accounting policies	Note 1 - Summary of significant accounting policies: Nature of our business - Organization Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to NL Industries, Inc. and its subsidiaries and affiliate, Kronos, taken as a whole. Management’s estimates Principles of consolidation Currency translation C ash and cash equivalents Restricted cash and cash equivalents with respect to certain workers compensation liabilities or legal settlements. To the extent the restricted amount relates to a recognized liability, we classify such restricted amount as either a current or noncurrent asset to correspond with the classification of the liability. To the extent the restricted amount does not relate to a recognized liability, we classify restricted cash as a current asset. Restricted cash equivalents classified as a current asset or a noncurrent asset are presented separately on our Consolidated Balance Sheets. Marketable securities and securities transactions Fair Value Measurements and Disclosures ● Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; ● Level 2 - Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the assets or liability; and ● Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. We classify all of our marketable securities as available-for-sale. We accumulate unrealized gains and losses on marketable debt securities as part of accumulated other comprehensive income (loss), net of related deferred income taxes. We recognize unrealized gains or losses on the marketable equity securities in Marketable equity securities on our Consolidated Statements of Operations. We base realized gains and losses upon the specific identification of the securities sold. See Notes 5 and 11. Accounts receivable Inventories and cost of sales Investment in Kronos Worldwide, Inc. Goodwill Leases to time, we may also enter into an arrangement in which the right to use and control an identified underlying asset is embedded in another type of contract. We determine if an arrangement is a lease (including leases embedded in another type of contract) at inception. All of our leases are classified as operating leases under ASC Topic 842 Leases Property and equipment; depreciation expense We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform impairment tests by comparing the estimated future undiscounted cash flows associated with the asset to the asset’s net carrying value to determine whether impairment exists. Employee benefit plans Income taxes We recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities, including investments in our subsidiaries and affiliates who are not members of the Contran Tax Group and undistributed earnings of non-U.S. subsidiaries which are not deemed to be permanently reinvested. In addition, we recognize deferred income taxes with respect to the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock because the exemption under GAAP to avoid recognition of such deferred income taxes is not available to us. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of such deferred tax assets that we believe does not meet the more-likely-than-not recognition criteria. We account for the tax effects of a change in tax law as a component of the income tax provision related to continuing operations in the period of enactment, including the tax effects of any deferred income taxes originally established through a financial statement component other than continuing operations (i.e. other comprehensive income). Changes in applicable income tax rates over time as a result of changes in tax law, or times in which a deferred income tax asset valuation allowance is initially recognized in one year and subsequently reversed in a later year, can give rise to “stranded” tax effects in accumulated other comprehensive income in which the net accumulated income tax (benefit) remaining in accumulated other comprehensive income does not correspond to the then-applicable income tax rate applied to the pre-tax amount which resides in accumulated other comprehensive income. As permitted by GAAP, our accounting policy is to remove any such stranded tax effect remaining in accumulated other comprehensive income, by recognizing an offset to our provision for income taxes related to continuing operations, only at the time when there is no remaining pre-tax amount in accumulated other comprehensive income. For accumulated other comprehensive income related to currency translation, this would occur only upon the sale or complete liquidation of one of our non-U.S. subsidiaries. For defined pension benefit plans and OPEB plans, this would occur whenever one of our subsidiaries which previously sponsored a defined benefit pension or OPEB plan had terminated such a plan and had no future obligation or plan asset associated with such a plan (such as in 2023 when we terminated our U.K. pension plan). We record a reserve for uncertain tax positions for tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. The amount of the benefit associated with our uncertain tax positions that we recognize is limited to the largest amount for which we believe the likelihood of realization is greater than 50%. We accrue penalties and interest on the difference between tax positions taken on our tax returns and the amount of benefit recognized for financial reporting purposes. We classify our reserves for uncertain tax positions in a separate current or noncurrent liability, depending on the nature of the tax position. See Note 13. Environmental remediation costs Net sales Revenue from Contracts with Customers, Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our products. Prices for our products are based on terms specified in published list prices and purchase orders, which generally do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component. We state sales net of price, early payment and distributor discounts as well as volume rebates (collectively, variable consideration). Variable consideration, to the extent present, is not material and is recognized as the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. Differences, if any, between estimates of the amount of variable consideration to which we will be entitled and the actual amount of such variable consideration have not been material in the past. We occasionally receive partial or full consideration from our customers prior to the completion of our performance obligation (shipment of product). We record estimated deferred revenue on the amount to which we are most likely to be entitled and deferred revenue is recognized into revenue as our performance obligation has been satisfied. Deferred revenue has not been material in the past. We report any tax assessed by a governmental authority that we collect from our customers that is both imposed on and concurrent with our revenue-producing activities (such as sales, use, value added and excise taxes) on a net basis (meaning we do not recognize these taxes either in our revenues or in our costs and expenses). Frequently, we receive orders for products to be delivered over dates that may extend across reporting periods. We invoice for each delivery upon shipment and recognize revenue for each distinct shipment when all sales recognition criteria for that shipment have been satisfied. As scheduled delivery dates for these orders are within a one year period, under the optional exemption provided by ASC 606, we do not disclose sales allocated to future shipments of partially completed contracts. Selling, general and administrative expenses; advertising costs; research and development costs Corporate expenses

Business and Geographic Informa

Business and Geographic Information	12 Months Ended
Business and Geographic Information	Dec. 31, 2023
Segments Geographical Areas [Abstract]
Business and geographic information	Note 2 - Business and geographic information: We operate in the security products industry and marine components industry through our majority ownership of CompX. CompX manufactures and sells security products including locking mechanisms and other security products for sale to the postal, transportation, office and institutional furniture, cabinetry, tool storage, healthcare and other industries. CompX also manufactures and distributes wake enhancement systems, stainless steel exhaust systems, gauges, throttle controls, trim tabs and related hardware and accessories primarily for ski/wakeboard boats and performance boats. The following table disaggregates our net sales by reporting unit, which are the categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (as required by ASC 606). Years ended December 31, 2021 2022 2023 (In thousands) Net sales: Security Products $ 105,124 $ 114,519 $ 121,182 Marine Components 35,691 52,043 40,105 Total $ 140,815 $ 166,562 $ 161,287 For geographic information, the point of origin (place of manufacture) for all net sales is the U.S., the point of destination for net sales is based on the location of the customer. Years ended December 31, 2021 2022 2023 (In thousands) Net sales - point of destination: United States $ 129,160 $ 153,982 $ 155,092 Canada 8,061 9,227 3,153 Mexico 589 722 829 Other 3,005 2,631 2,213 Total $ 140,815 $ 166,562 $ 161,287

Accounts and other receivables,

Accounts and other receivables, net	12 Months Ended
Accounts and other receivables, net	Dec. 31, 2023
Accounts and other receivables, net
Accounts and other receivables, net	Note 3 - Accounts and other receivables, net: December 31, 2022 2023 (In thousands) Trade receivables - CompX $ 17,910 $ 17,131 Other receivables 30 40 Allowance for doubtful accounts (70) (70) Total $ 17,870 $ 17,101 Accrued insurance recoveries are discussed in Note 16.

Inventories, net

Inventories, net	12 Months Ended
Inventories, net	Dec. 31, 2023
Inventories, net
Inventories, net	Note 4 - Inventories, net: December 31, 2022 2023 (In thousands) Raw materials $ 6,245 $ 5,738 Work in process 19,983 19,042 Finished products 5,062 5,932 Total $ 31,290 $ 30,712

Marketable securities

Marketable securities	12 Months Ended
Marketable securities	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Marketable securities	Note 5 - Marketable securities: Our current marketable securities are invested in U.S. government treasuries with original maturities ranging in length from 4 months to 12 months. The fair value of our current marketable securities are determined using Level 2 inputs (because although these securities are traded, in many cases the market is not active and the year-end valuation is generally based on the last trade of the year, which may be several days prior to December 31). Our noncurrent marketable securities consist of investments in the publicly-traded shares of our immediate parent company Valhi, Inc. Our shares of Valhi common stock are accounted for as available-for-sale securities, which are carried at fair value using quoted market prices in active markets and represent a Level 1 input within the fair value hierarchy. Fair value Cost or measurement Market amortized Unrealized level value cost gain (loss) (In thousands) December 31, 2022 Current assets - fixed income securities 2 $ 70,164 $ 70,226 $ (62) Noncurrent assets Valhi common stock 1 $ 26,350 $ 24,347 $ 2,003 December 31, 2023 Current assets - fixed income securities 2 $ 53,149 $ 53,181 $ (32) Noncurrent assets Valhi common stock 1 $ 18,194 $ 24,347 $ (6,153) At December 31, 2022 and 2023, we held approximately 1.2 million shares of our immediate parent company, Valhi. See Note 1. The per share quoted market price of Valhi common stock at December 31, 2022 and 2023 was $22.00 and $15.19, respectively. The Valhi common stock we own is subject to the restrictions on resale pursuant to certain provisions of the SEC Rule 144. In addition, as a majority-owned subsidiary of Valhi we cannot vote our shares of Valhi common stock under Delaware General Corporation Law, but we do receive dividends from Valhi on these shares, when declared and paid.

Investment in Kronos Worldwide,

Investment in Kronos Worldwide, Inc.	12 Months Ended
Investment in Kronos Worldwide, Inc.	Dec. 31, 2023
Investment in Kronos Worldwide, Inc.
Investment in Kronos Worldwide, Inc.	Note 6 - Investment in Kronos Worldwide, Inc.: At December 31, 2022 and 2023, we owned approximately 35.2 million shares of Kronos common stock. The per share quoted market price of Kronos common stock at December 31, 2022 and 2023 was $9.40 and $9.94 per share, respectively, or an aggregate market value of $331.1 million and $350.1 million, respectively. The change in the carrying value of our investment in Kronos during the past three years is summarized below: Years ended December 31, 2021 2022 2023 (In millions) Balance at the beginning of the period $ 242.4 $ 264.8 $ 292.2 Equity in earnings (loss) of Kronos 34.3 31.9 (15.0) Dividends received from Kronos (25.4) (26.8) (26.8) Equity in Kronos' other comprehensive income (loss): Currency translation (2.1) (8.8) 1.1 Defined benefit pension plans 15.6 30.9 (3.9) Other postretirement benefit plans — — (.1) Other — .2 .1 Balance at the end of the period $ 264.8 $ 292.2 $ 247.6 Selected financial information of Kronos is summarized below: December 31, 2022 2023 (In millions) Current assets $ 1,242.2 $ 1,117.4 Property and equipment, net 484.5 482.9 Investment in TiO 2 112.9 111.0 Other noncurrent assets 94.8 126.7 Total assets $ 1,934.4 $ 1,838.0 Current liabilities $ 326.7 $ 370.8 Long-term debt 424.1 440.9 Accrued pension costs 128.6 150.0 Other noncurrent liabilities 97.8 68.0 Stockholders’ equity 957.2 808.3 Total liabilities and stockholders’ equity $ 1,934.4 $ 1,838.0 Years ended December 31, 2021 2022 2023 (In millions) Net sales $ 1,939.4 $ 1,930.2 $ 1,666.5 Cost of sales 1,493.2 1,539.1 1,501.6 Income (loss) from operations 187.1 159.6 (56.0) Income tax expense (benefit) 40.5 29.4 (23.8) Net income (loss) 112.9 104.5 (49.1)

Goodwill

Goodwill	12 Months Ended
Goodwill	Dec. 31, 2023
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	Note 7 - Goodwill: All of our goodwill is related to our component products operations and was generated from CompX’s acquisitions of certain business units. There have been no changes in the carrying amount of our goodwill during the past three years. We assign goodwill based on the reporting unit (as that term is defined in ASC Topic 350-20-20 Goodwill In 2021, 2022 and 2023, our goodwill was tested for impairment only in the third quarter of each year in connection with our annual testing. No impairment was indicated as part of such annual review of goodwill. As permitted by GAAP, during 2021, 2022 and 2023 we used the qualitative assessment of ASC 350-20-35 for our annual impairment test and determined it was not necessary to perform the quantitative goodwill impairment test. Prior to 2021, all of the goodwill related to CompX’s marine components operations (which aggregated $10.1 million) was impaired, and all of the goodwill related to our wholly-owned subsidiary EWI Re, Inc., (EWI) which was formerly an insurance brokerage and risk management services company (which aggregated $6.4 million), was impaired. Our gross goodwill at December 31, 2023 was $43.7 million.

Other assets, net

Other assets, net	12 Months Ended
Other assets, net	Dec. 31, 2023
Other assets, net
Other assets, net	Note 8 - Other assets, net: December 31, 2022 2023 (In thousands) Pension asset $ 1,105 $ — Other 1,418 2,060 Total $ 2,523 $ 2,060

Accrued and other current liabi

Accrued and other current liabilities	12 Months Ended
Accrued and other current liabilities	Dec. 31, 2023
Accrued and other current liabilities
Accrued and other current liabilities	Note 9 - Accrued and other current liabilities: December 31, 2022 2023 (In thousands) Employee benefits $ 11,023 $ 11,290 Other 2,370 1,892 Total $ 13,393 $ 13,182

Long-term debt

Long-term debt	12 Months Ended
Long-term debt	Dec. 31, 2023
Long-term debt
Long-term debt	Note 10 - Long-term debt: In November 2016, we entered into a financing transaction with Valhi. Previously, and in contemplation of the financing transaction described herein, we formed NLKW Holding, LLC and capitalized it with 35.2 million shares of the common stock of Kronos held by us. The financing transaction consisted of two steps. Under the first step, NLKW entered into a $50 million revolving credit facility (the “Valhi Credit Facility”) pursuant to which NLKW can borrow up to $50 million from Valhi (with such commitment amount subject to increase from time to time at Valhi’s sole discretion). Proceeds from any borrowings by NLKW under the Valhi Credit Facility would be available for one or more loans from NLKW to us in accordance with the terms of the second step of the financing transaction: a Back-to-Back Credit Facility, as described below. Outstanding borrowings under the Valhi Credit Facility bear interest at the prime rate plus 1.875% per annum, payable quarterly, with all amounts due on the maturity date. The maximum principal amount which may be outstanding from time-to-time under the Valhi Credit Facility is limited to 50% of the amount determined by multiplying the number of shares of Kronos common stock pledged by the most recent closing price of such security on the New York Stock Exchange. Borrowings under the Valhi Credit Facility are collateralized by the assets of NLKW (consisting primarily of the shares of Kronos common stock pledged) and 100% of the membership interest in NLKW held by us. The Valhi Credit Facility contains a number of covenants and restrictions which, among other things, restrict NLKW’s ability to incur additional debt, incur liens, and merge or consolidate with, or sell or transfer substantially all of NLKW’s assets to, another entity, and require NLKW to maintain a minimum specified level of consolidated net worth. Upon an event of default, Valhi will be entitled to terminate its commitment to make further loans to NLKW, to declare the outstanding loans (with interest) immediately due and payable, and, in the case of certain insolvency events with respect to NLKW or us, to exercise its rights with respect to the collateral. Such collateral rights include the right to purchase all of the shares of Kronos common stock pledged at a purchase price equal to the aggregate market value of such stock (with such market value determined by an independent third-party valuation provider), less amounts owing to Valhi under the Valhi Credit Facility, with up to 50% of such purchase price being payable by Valhi in the form of an unsecured promissory note bearing interest at the prime rate plus 2.75% per annum, payable quarterly, with all amounts due no later than five years from the date of purchase, and with the remainder of such purchase price payable in cash at the date of purchase. Contemporaneously with the entering into the Valhi Credit Facility, NLKW entered into a $50 million revolving credit facility (the “Back-to-Back Credit Facility”) with us, pursuant to which we can borrow up to $50 million from NLKW (with such commitment amount subject to increase from time to time at NLKW’s sole discretion). Proceeds from any borrowings under the Back-to-Back Credit Facility would be available for our general corporate purposes, including providing resources to assist us in the resolution of certain claims and contingent liabilities which may be asserted against us. Outstanding borrowings under the Back-to-Back Credit Facility bear interest at the same rate and are payable on the same maturity date as are borrowings by NLKW under the Valhi Credit Facility. Borrowings under the Back-to-Back Credit Facility are on an unsecured basis; however, as a condition thereto, we pledged to Valhi as collateral for the Valhi Credit Facility our 100% membership interest in NLKW. Any outstanding borrowings and interest on such borrowings under the Back-to-Back Credit Facility are eliminated in the preparation of the consolidated financial statements. In November 2022, NLKW and Valhi entered into a first amendment to the Valhi Credit Facility to extend the latest maturity date (and consequently the latest borrowing date) under the Valhi Credit Facility from December 31, 2023 to December 31, 2030; and NLKW and NL entered into a first amendment to the Back-to-Back Credit Facility to extend the latest maturity date (and consequently the latest borrowing date) under the Back-to-Back Credit Facility from December 31, 2023 to December 31, 2030. The related collateral arrangements remained unchanged by these amendments. We had outstanding borrowings under the Valhi Credit Facility of $.5 million as of December 31, 2022 and 2023. The interest rate as of December 31, 2023 was 10.4% and the average interest rate for the year then ended was 10.1%. See Note 15. NLKW is in compliance with all of the covenants contained in the Valhi Credit Facility at December 31, 2023.

Employee benefit plans

Employee benefit plans	12 Months Ended
Employee benefit plans	Dec. 31, 2023
Employee benefit plans
Employee benefit plans	Note 11 - Employee benefit plans: Defined contribution plans Defined benefit pension plans We previously maintained a defined benefit pension plan in the U.K. related to a former disposed U.K. business unit. In accordance with applicable U.K. pension regulations, we entered into an agreement in March 2021 for the bulk annuity purchase, or “buy-in”, with a specialist insurer of defined benefit pension plans. Following the buy-in, individual policies replaced the bulk annuity policy in a “buy-out” which was completed as of May 1, 2023. The buy-out was completed with existing plan funds. At the completion of the buy-out, the assets and liabilities of the U.K. pension plan were removed from our Consolidated Financial Statements and a non-cash pension plan termination loss of $4.9 million was recognized in the second quarter of 2023. We expect to contribute approximately $1.0 million to our defined benefit pension plan during 2024. Benefit payments to all plan participants out of plan assets are expected to be the equivalent of: Years ending December 31, Amount (In thousands) 2024 $ 3,012 2025 2,923 2026 2,849 2027 2,766 2028 2,668 Next 5 years 11,725 The funded status of our defined benefit pension plans is presented in the table below. December 31, 2022 2023 (In thousands) Change in projected benefit obligations (PBO): Benefit obligations at beginning of the year $ 50,367 $ 36,090 Interest cost 1,138 1,619 Plan settlement (188) (5,537) Actuarial (gains) losses (10,777) 265 Change in currency exchange rates (965) 116 Benefits paid (3,485) (3,115) Benefit obligations at end of the year 36,090 29,438 Change in plan assets: Fair value of plan assets at beginning of the year 47,940 34,126 Actual return on plan assets (10,263) 2,009 Employer contributions 1,228 196 Plan settlement (188) (5,537) Change in currency exchange rates (1,106) 131 Benefits paid (3,485) (3,115) Fair value of plan assets at end of year 34,126 27,810 Funded status $ (1,964) $ (1,628) Amounts recognized in the balance sheet: Noncurrent pension asset $ 1,105 $ — Accrued pension costs: Current (57) (57) Noncurrent (3,012) (1,571) Total (1,964) (1,628) Accumulated other comprehensive loss - actuarial losses, net 27,530 21,802 Total $ 25,566 $ 20,174 Accumulated benefit obligations (ABO) $ 36,090 $ 29,438 The amounts shown in the table above for actuarial (gains) losses at December 31, 2022 and 2023 have not been recognized as components of our periodic defined benefit pension cost as of those dates. These amounts will be recognized as components of our periodic defined benefit cost in future years. These amounts, net of deferred income taxes, are recognized in our accumulated other comprehensive income (loss) at December 31, 2022 and 2023. The total net underfunded status of our defined benefit pension plans decreased from $2.0 million at December 31, 2022 to $1.6 million at December 31, 2023 due to the change in our plan assets exceeding the change in our PBO during 2023. Plan assets increased relative to our PBO primarily due to improved returns on plan assets during 2023. The table below details the changes in other comprehensive income (loss) during 2021, 2022 and 2023. Years ended December 31, 2021 2022 2023 (In thousands) Changes in plan assets and benefit obligations recognized in Net actuarial gain (loss) arising during the year $ 1,618 $ (1,034) $ (574) Plan settlement — 104 4,911 Amortization of unrecognized net actuarial gain (loss) (1,562) 1,664 1,391 Total $ 56 $ 734 $ 5,728 The components of our net periodic defined benefit pension cost are presented in the table below. The amounts shown below for recognized actuarial losses in 2021, 2022 and 2023, net of deferred income taxes, was recognized as a component of our accumulated other comprehensive income at December 31, 2020, 2021 and 2022, respectively. Years ended December 31, 2021 2022 2023 (In thousands) Net periodic pension cost: Interest cost $ 947 $ 1,138 $ 1,619 Expected return on plan assets (1,603) (1,552) (1,452) Plan settlement — 104 4,911 Recognized actuarial losses 1,562 1,664 1,391 Total $ 906 $ 1,354 $ 6,469 Certain information concerning our defined benefit pension plans (including information concerning certain plans for which ABO exceeds the fair value of plan assets as of the indicated date) is presented in the table below. As discussed above, our U.K. plan was terminated in the second quarter of 2023. December 31, 2022 2023 (In thousands) PBO at end of the year: U.S. plan $ 30,254 $ 29,438 U.K. plan 5,836 — Total $ 36,090 $ 29,438 Fair value of plan assets at end of the year: U.S. plan $ 27,185 $ 27,810 U.K. plan 6,941 — Total $ 34,126 $ 27,810 Plans for which the ABO exceeds plan assets (only our U.S. plan): PBO $ 30,254 $ 29,438 ABO 30,254 29,438 Fair value of plan assets 27,185 27,810 The weighted-average discount rate assumptions used in determining the actuarial present value of our benefit obligations as of December 31, 2022 and 2023 are 5.1% and 5.0%, respectively. Such weighted-average rates were determined using the projected benefit obligations at each date. Since our plans are closed to new participants and no new additional benefits accrue to existing plan participants, assumptions regarding future compensation levels are not applicable. Consequently, the accumulated benefit obligations for all of our defined benefit pension plans were equal to the projected benefit obligations at December 31, 2022 and 2023. The weighted-average rate assumptions used in determining the net periodic pension cost for 2021, 2022 and 2023 are presented in the table below. Such weighted-average discount rates were determined using the projected benefit obligations as of the beginning of each year and the weighted-average long-term return on plan assets was determined using the fair value of plan assets as of the beginning of each year. Years ended December 31, Rate 2021 2022 2023 Discount rate 2.1 % 2.3 % 5.1 % Long-term rate of return on plan assets 3.3 % 3.3 % 4.9 % Variances from actuarially assumed rates will result in increases or decreases in accumulated pension obligations, pension expense and funding requirements in future periods. In determining the expected long-term rate of return on our U.S. and our previously maintained non-U.S. plan asset assumptions, we consider the long-term asset mix (e.g. equity vs. fixed income) for the assets for each of our plans and the expected long-term rates of return for such asset components. In addition, we receive third-party advice about appropriate long-term rates of return. In the U.S. we currently have a plan asset target allocation of 33% to equity securities, 59% to fixed income securities, and the remainder is allocated to multi-asset and other strategies. The expected long-term rate of return for such investments is approximately 7% and 5%, respectively (before plan administrative expenses). Approximately 98% of our U.S. plan assets are invested in funds that are valued at net asset value (NAV) and, in accordance with ASC 820-10, not subject to classification in the fair value hierarchy. During 2022 and through plan termination in 2023, the non-U.S. plan assets were invested primarily in insurance contracts and were a Level 3 input. We regularly review our actual asset allocation for each plan, and will periodically rebalance the investments in each plan to more accurately reflect the targeted allocation and/or maximize the overall long-term return when considered appropriate. The composition of our pension plan assets by fair value level at December 31, 2022 and 2023 is shown in the tables below. Fair Value Measurements Quoted prices Significant other Significant in active observable unobservable Assets measured Total markets (Level 1) inputs (Level 2) inputs (Level 3) at NAV (In thousands) December 31, 2022: U.S.: Equities $ 8,591 $ 694 $ — $ — $ 7,897 Fixed income 15,954 149 — — 15,805 Cash and other 2,640 1,903 — 44 693 U.K. - Other 6,941 1,104 — 5,837 — Total $ 34,126 $ 3,850 $ — $ 5,881 $ 24,395 As noted above, in March 2021 we purchased a bulk annuity for our U.K. pension plan and such annuity is considered a Level 3 asset included with “U.K. – Other” in the table above. Fair Value Measurements Quoted prices Significant other Significant in active observable unobservable Assets measured Total markets (Level 1) inputs (Level 2) inputs (Level 3) at NAV (In thousands) December 31, 2023: U.S.: Equities $ 7,786 $ — $ — $ — $ 7,786 Fixed income 18,733 — — — 18,733 Cash and other 1,291 489 — 41 761 Total $ 27,810 $ 489 $ — $ 41 $ 27,280

Other noncurrent liabilities

Other noncurrent liabilities	12 Months Ended
Other noncurrent liabilities	Dec. 31, 2023
Other noncurrent liabilities
Other noncurrent liabilities	Note 12 - Other noncurrent liabilities: December 31, 2022 2023 (In thousands) Reserve for uncertain tax positions $ 2,714 $ 3,707 OPEB 637 524 Insurance claims and expenses 625 579 Other 303 264 Total $ 4,279 $ 5,074 Our reserve for uncertain tax positions is discussed in Note 13.

Income taxes

Income taxes	12 Months Ended
Income taxes	Dec. 31, 2023
Income taxes
Income taxes	Note 13 - Income taxes: The provision for income taxes and the difference between the provision for income taxes and the amount that would be expected using the U.S. federal statutory income tax rate are presented below. Years ended December 31, 2021 2022 2023 (In thousands) Expected tax expense (benefit), at U.S. federal statutory $ 12,776 $ 8,241 $ (1,348) Nontaxable dividends received from Kronos (5,325) (5,621) (5,621) U.S. state income taxes and other, net 28 165 (32) Income tax expense (benefit) $ 7,479 $ 2,785 $ (7,001) Components of income tax expense (benefit): Currently payable $ 26 $ 495 $ 307 Deferred income tax expense (benefit) 7,453 2,290 (7,308) Income tax expense (benefit) $ 7,479 $ 2,785 $ (7,001) Comprehensive provision (benefit) for income taxes allocable to: Net income $ 7,479 $ 2,785 $ (7,001) Other comprehensive income: Currency translation (429) (1,849) 241 Pension plans 3,252 6,542 (291) OPEB plans (44) 69 (35) Total $ 10,258 $ 7,547 $ (7,086) In accordance with GAAP, we recognize deferred income taxes on our undistributed equity in earnings (losses) of Kronos. Because we and Kronos are part of the same U.S. federal income tax group, any dividends we receive from Kronos are nontaxable to us. Accordingly, we do not recognize and we are not required to pay income taxes on dividends from Kronos. We received aggregate dividends from Kronos of $25.4 million in 2021, and $26.8 million in each of 2022 and 2023. See Note 6. The components of the net deferred tax liability at December 31, 2022 and 2023 are summarized in the following table. December 31, 2022 2023 Assets Liabilities Assets Liabilities (In thousands) Tax effect of temporary differences related to: Inventories $ 369 $ — $ 373 $ — Marketable securities — (5,290) — (3,586) Property and equipment — (2,025) — (1,467) Accrued OPEB costs 168 — 139 — Accrued pension costs 412 — 124 — Accrued employee benefits 1,342 — 1,421 — Accrued environmental liabilities 24,332 — 21,332 — Goodwill — (1,693) — (1,693) Other accrued liabilities and deductible differences 161 — 149 — Other taxable differences — (2,391) — (2,392) Investment in Kronos Worldwide, Inc. — (65,504) — (56,133) Adjusted gross deferred tax assets (liabilities) 26,784 (76,903) 23,538 (65,271) Netting of items by tax jurisdiction (26,784) 26,784 (23,538) 23,538 Net noncurrent deferred tax liability $ — $ (50,119) $ — $ (41,733) At December 31, 2023, we have a deferred tax asset relating to our NOL carryforwards for federal income tax purposes of $3.6 million all of which have an indefinite carryforward period subject to an 80% annual usage limitation. Our deferred tax asset for such NOL carryforward is net of a portion of our uncertain tax positions as discussed below. We believe we have adequate accruals for additional taxes and related interest expense which could ultimately result from tax examinations. We believe the ultimate disposition of tax examinations should not have a material adverse effect on our consolidated financial position, results of operations or liquidity. At December 31, 2021, 2022, and 2023, the gross amount of our uncertain tax positions (exclusive of the effect of interest and penalties) was $7.3 million, and this amount has not changed during the past three years. Previously, we made certain pro-rata distributions to our stockholders in the form of Kronos common stock and we recognized a taxable gain related to such distributions. Our uncertain tax positions are attributable to such prior period distribution of Kronos common stock. As discussed in Note 1, we are part of the Contran Tax Group and we have not paid this liability because Contran has not paid the liability to the applicable tax authority. This liability would be payable by Contran to the applicable tax authority only if the shares of Kronos common stock were to be sold or otherwise disposed outside of the Contran Tax Group. At December 31, 2023, $3.6 million of our uncertain tax position is classified as a component of our noncurrent deferred tax liability. If our uncertain tax position at December 31, 2023 was recognized, a benefit of $7.3 million would affect our effective income tax rate. We currently estimate that our unrecognized tax benefits will not change materially during the next twelve months. We and Contran file income tax returns in U.S. federal and various state and local jurisdictions. Our U.S. income tax returns prior to 2020 are generally considered closed to examination by applicable tax authorities. Income tax matters related to Kronos Kronos periodically reviews its deferred tax assets (“DTA”) to determine if a valuation allowance is required. At December 31, 2023, Kronos has German corporate and trade net operating loss (“NOL”) carryforwards of $478.7 million (DTA of $75.8 million) and $54.5 million (DTA of $5.9 million), respectively; Belgian corporate NOL carryforwards of $47.0 million (DTA of $11.8 million) and Canadian corporate and provincial NOL carryforwards of $31.5 million (DTA of $4.7 million) and $34.9 million (DTA of $4.0 million), respectively. Kronos has concluded that no deferred income tax asset valuation allowance is required to be recognized with respect to such carryforwards, principally because (i) such carryforwards have lengthy carryforward periods (the German and Belgian carryforwards may be carried forward indefinitely and the Canadian carryforwards may be carried forward 20 years), (ii) Kronos has utilized a portion of such carryforwards during the most recent three-year period and (iii) Kronos currently expects to utilize the remainder of such carryforwards over the long term. However, prior to the complete utilization of such carryforwards, if Kronos were to generate additional losses in its German, Belgian or Canadian operations for an extended period of time, or if applicable laws were to change such that the carryforward periods were more limited, it is possible that it might conclude the benefit of such carryforwards would no longer meet the more-likely-than-not recognition criteria, at which point Kronos would be required to recognize a valuation allowance against some or all of the then-remaining tax benefit associated with the carryforwards. The 2017 Tax Act limited Kronos’ business interest expense to the sum of its business interest income and 30% of its adjusted taxable income as defined in the Tax Act. Any business interest expense disallowed as a deduction as a result of the limitation may be carried forward indefinitely. At December 31, 2022 and December 31, 2023, Kronos has recorded deferred tax assets of $.9 million and $3.5 million, respectively, for the carryforwards associated with the nondeductible portion of its interest expense and has concluded it is required to recognize a valuation allowance for such deferred tax asset under the more-likely-than-not recognition criteria. During 2023, Kronos recognized a non-cash deferred income tax expense of $2.6 million with respect to the valuation allowance recorded on additional interest expense carryforwards Prior to the enactment of the 2017 Tax Act, the undistributed earnings of Kronos’ European subsidiaries were deemed to be permanently reinvested (Kronos had not made a similar determination with respect to the undistributed earnings of its Canadian subsidiary). Pursuant to the one-time repatriation tax (Transition Tax) provisions of the 2017 Tax Act which imposed a one-time repatriation tax on post-1986 undistributed earnings, Kronos recognized current income tax expense of $74.5 million and elected to pay such tax in annual installments over an eight-year period beginning in 2018. At December 31, 2023 the balance of its unpaid Transition Tax is $33.5 million, with two remaining payments of $14.9 million due in 2024 and $18.6 million due in 2025. The payments are recorded as a current and noncurrent payable to affiliate (income taxes payable to Valhi) on Kronos’ Consolidated Balance Sheet at December 31, 2023. Tax authorities are examining certain of Kronos’ U.S. and non-U.S. tax returns and may propose tax deficiencies, including penalties and interest. Because of the inherent uncertainties involved in settlement initiatives and court and tax proceedings, Kronos cannot guarantee that these tax matters, if any, will be resolved in Kronos’ favor, and therefore its potential exposure, if any, is also uncertain. Kronos believes it has adequate accruals for additional taxes and related interest expense which could ultimately result from tax examinations. Kronos believes the ultimate disposition of tax examinations should not have a material adverse effect on its consolidated financial position, results of operations or liquidity.

Stockholders' equity

Stockholders' equity	12 Months Ended
Stockholders' equity	Dec. 31, 2023
Stockholders' equity
Stockholders' equity	Note 14 - Stockholders’ equity: Long-term incentive compensation plan plan was approved at our May 2023 shareholder meeting, and the prior director stock plan terminated effective June 30, 2023. At December 31, 2023, 200,000 shares were available for future award under this new plan. Long-term incentive compensation plans of subsidiaries and affiliates shares Dividends Accumulated other comprehensive loss Years ended December 31, 2021 2022 2023 (In thousands) Accumulated other comprehensive loss, net of tax: Currency translation: Balance at beginning of period $ (169,575) $ (171,235) $ (178,191) Other comprehensive income (loss) (1,660) (6,956) 1,072 Balance at end of period $ (171,235) $ (178,191) $ (177,119) Defined benefit pension plans: Balance at beginning of period $ (80,704) $ (68,468) $ (43,857) Other comprehensive income (loss): Amortization of prior service cost and net losses included in 4,813 3,592 1,436 Net actuarial gain (loss) arising during the year 7,423 20,881 (3,094) Plan settlement — 138 4,142 Balance at end of period $ (68,468) $ (43,857) $ (41,373) OPEB plans: Balance at beginning of period $ (910) $ (1,053) $ (893) Other comprehensive income (loss): Amortization of net gain included in net periodic (143) (369) (357) Net actuarial gain arising during the year — 529 136 Balance at end of period $ (1,053) $ (893) $ (1,114) Marketable debt securities: Balance at beginning of period $ — $ — $ (50) Other comprehensive income (loss) - unrealized gain (loss) — (50) 35 Balance at end of period $ — $ (50) $ (15) Total accumulated other comprehensive loss: Balance at beginning of period $ (251,189) $ (240,756) $ (222,991) Other comprehensive income 10,433 17,765 3,370 Balance at end of period $ (240,756) $ (222,991) $ (219,621) See Note 5 for further discussion on our marketable securities and Note 11 for amounts related to our defined benefit pension plans. Other – During 2022, CompX acquired 78,900 shares of its Class A common stock for an aggregate amount of approximately $1.7 million under prior repurchase authorizations. Of these shares, 70,000 shares were purchased in a market transaction, and 8,900 shares were purchased from two of its affiliates in two separate private transactions that were also approved in advance by CompX’s independent directors. During 2021, CompX purchased 75,000 shares of its Class A common stock in a market transaction for approximately $1.3 million. At December 31, 2023, 523,647 shares were available for purchase under CompX’s prior repurchase authorizations.

Related party transactions

Related party transactions	12 Months Ended
Related party transactions	Dec. 31, 2023
Related party transactions
Related party transactions	Note 15 - Related party transactions: We may be deemed to be controlled by Ms. Simmons and the Family Trust. See Note 1. Corporations that may be deemed to be controlled by or affiliated with such individuals sometimes engage in (a) intercorporate transactions such as guarantees, management and expense sharing arrangements, shared fee arrangements, joint ventures, partnerships, loans, options, advances of funds on open account, and sales, leases and exchanges of assets, including securities issued by both related and unrelated parties and (b) common investment and acquisition strategies, business combinations, reorganizations, recapitalizations, securities repurchases, and purchases and sales (and other acquisitions and dispositions) of subsidiaries, divisions or other business units, which transactions have involved both related and unrelated parties and have included transactions which resulted in the acquisition by one related party of a publicly-held noncontrolling interest in another related party. While no transactions of the type described above are planned or proposed with respect to us other than as set forth in these financial statements, we continuously consider, review and evaluate, and understand that Contran and related entities consider, review and evaluate such transactions. Depending upon the business, tax and other objectives then relevant, it is possible that we might be a party to one or more such transactions in the future. Current receivables and payables to affiliates are summarized in the table below: December 31, 2022 2023 (In thousands) Current receivables from affiliates: Other receivables from affiliates $ — $ 601 Income taxes receivable from Valhi 636 27 $ 636 $ 628 Current payables to affiliates: Other - trade items $ 665 $ 634 From time to time, we may have loans and advances outstanding between us and various related parties, pursuant to term and demand notes. We generally enter into these loans and advances for cash management purposes. When we loan funds to related parties, we are generally able to earn a higher rate of return on the loan than the lender would earn if the funds were invested in other instruments and when we borrow from related parties, we are generally able to pay a lower rate of interest than we would pay if we borrowed from unrelated parties. While certain of such loans may be of a lesser credit quality than cash equivalent instruments otherwise available to us, we believe that we have evaluated the credit risks involved and reflected those credit risks in the terms of the applicable loans. NLKW had borrowings outstanding of $.5 million as of December 31, 2022 and 2023 under the Valhi Credit Facility, and we incurred a nominal amount of interest expense under such credit facility for the years ended December 31, 2021, 2022 and 2023. See Note 10. In addition, prior to 2021, CompX entered into an unsecured revolving demand promissory note with Valhi under which, as amended, CompX has agreed to loan Valhi up to $25 million. CompX’s loan to Valhi, as amended, bears interest at prime plus 1.00%, payable quarterly, with all principal due on demand, but in any event no earlier than December 31, 2025. Loans made to Valhi at any time are at CompX’s discretion. At December 31, 2022 and 2023, the outstanding principal balance receivable from Valhi under the promissory note was $13.2 million and $10.6 million, respectively. Interest income (including unused commitment fees) on CompX’s loan to Valhi was $1.2 million in 2021, $1.0 million in 2022 and $1.2 million in 2023. In February 2024, Kronos entered into a $53.7 million subordinated, unsecured term loan with Contran. Under the terms of various intercorporate services agreements (ISAs) we enter into with Contran, employees of Contran will provide certain management, tax planning, financial and administrative services to the Company on a fee basis. Such fees are based on the compensation of individual Contran employees providing services for us and/or estimates of time devoted to our affairs by such persons. Because of the number of companies affiliated with Contran, we believe we benefit from cost savings and economies of scale gained by not having certain management, financial and administrative staffs duplicated at each entity, thus allowing certain Contran employees to provide services to multiple companies but only be compensated by Contran. We, CompX and Kronos negotiate fees annually and agreements renew quarterly. The net ISA fees charged to us by Contran, (including amounts attributable to Kronos for all periods) aggregated approximately $33.2 million in 2021, $33.5 million in 2022 and $30.8 million in 2023. Contran and certain of its subsidiaries and affiliates, including us, purchase certain of their insurance policies and risk management services as a group, with the costs of the jointly-owned policies and services being apportioned among the participating companies. Tall Pines Insurance Company, a subsidiary of Valhi, underwrites certain insurance policies for Contran and certain of its subsidiaries and affiliates, including us. Tall Pines purchases reinsurance from highly rated (as determined by A.M. Best or other internationally recognized ratings agency) third-party insurance carriers for substantially all of the risks it underwrites. Consistent with insurance industry practices, Tall Pines receives commissions from the reinsurance underwriters and/or assesses fees for certain of the policies that it underwrites. During 2021, 2022 and 2023 we paid $26.3 million, $24.3 million and $28.4 million, respectively, under the group insurance program (including amounts attributable to Kronos for all periods, including its Louisiana Pigment Company joint venture) which amounts principally represent insurance premiums, including $19.5 million, $18.2 million and $20.7 million in 2021, 2022 and 2023, respectively, for policies written by Tall Pines. Amounts paid under the group insurance program also include payments to insurers or reinsurers for the reimbursement of claims within our applicable deductible or retention ranges that such insurers and reinsurers paid to third parties on our behalf, as well as amounts for claims and risk management services and various other third-party fees and expenses incurred by the program. We expect these relationships will continue in 2024. With respect to certain of such jointly-owned policies, it is possible that unusually large losses incurred by one or more insured party during a given policy period could leave the other participating companies without adequate coverage under that policy for the balance of the policy period. As a result, and in the event that the available coverage under a particular policy would become exhausted by one or more claims, Contran and certain of its subsidiaries and affiliates, including us, have entered into a loss sharing agreement under which any uninsured loss arising because the available coverage had been exhausted by one or more claims will be shared ratably by those entities that had submitted claims under the relevant policy. We believe the benefits in the form of reduced premiums and broader coverage associated with the group coverage for such policies justifies the risk associated with the potential for any uninsured loss. Contran and certain of its subsidiaries, including us, participate in a combined information technology data services program that Contran provides for primary data processing and failover. The program apportions its costs among the participating companies. The aggregate amount Kronos paid to Contran for such services was $.3 million in each of 2021 and 2022 and $.4 million in 2023. Under the terms of a sublease agreement between Contran and Kronos, Kronos leases certain office space from Contran. Kronos paid Contran $.4 million in 2021, $.5 million in 2022 and $.6 million in 2023 for such rent and related ancillary services. We expect that these relationships with Contran will continue in 2024.

Commitments and contingencies

Commitments and contingencies	12 Months Ended
Commitments and contingencies	Dec. 31, 2023
Commitments and contingencies.
Commitments and contingencies	Note 16 - Commitments and contingencies: Lead pigment litigation Our former operations included the manufacture of lead pigments for use in paint and lead-based paint. We, other former manufacturers of lead pigments for use in paint and lead-based paint (together, the “former pigment manufacturers”), and the Lead Industries Association (LIA), which discontinued business operations in 2002, have been named as defendants in various legal proceedings seeking damages for personal injury, property damage and governmental expenditures allegedly caused by the use of lead-based paints. Certain of these actions have been filed by or on behalf of states, counties, cities or their public housing authorities and school districts, and certain others have been asserted as class actions. These lawsuits seek recovery under a variety of theories, including public and private nuisance, negligent product design, negligent failure to warn, strict liability, breach of warranty, conspiracy/concert of action, aiding and abetting, enterprise liability, market share or risk contribution liability, intentional tort, fraud and misrepresentation, violations of state consumer protection statutes, supplier negligence and similar claims. The plaintiffs in these actions generally seek to impose on the defendants responsibility for lead paint abatement and health concerns associated with the use of lead-based paints, including damages for personal injury, contribution and/or indemnification for medical expenses, medical monitoring expenses and costs for educational programs. To the extent the plaintiffs seek compensatory or punitive damages in these actions, such damages are generally unspecified. In some cases, the damages are unspecified pursuant to the requirements of applicable state law. A number of cases are inactive or have been dismissed or withdrawn. Most of the remaining cases are in various pre-trial stages. Some are on appeal following dismissal or summary judgment rulings or a trial verdict in favor of either the defendants or the plaintiffs. We believe we have substantial defenses to these actions, and we intend to continue to deny all allegations of wrongdoing and liability and to defend against all actions vigorously. We do not believe it is probable we have incurred any liability with respect to pending lead pigment litigation cases to which we are a party, and with respect to all such lead pigment litigation cases to which we are a party, we believe liability to us that may result, if any, in this regard cannot be reasonably estimated, because: ● we have never settled any of the market share, intentional tort, fraud, nuisance, supplier negligence, breach of warranty, conspiracy, misrepresentation, aiding and abetting, enterprise liability, or statutory cases (other than the Santa Clara case discussed below) , ● no final, non-appealable adverse judgments have ever been entered against us, and ● we have never ultimately been found liable with respect to any such litigation matters, including over 100 cases over a thirty-year period for which we were previously a party and for which we have been dismissed without any finding of liability. Accordingly, we have not accrued any amounts for any of the pending lead pigment and lead-based paint litigation cases filed by or on behalf of states, counties, cities or their public housing authorities and school districts, or those asserted as class actions. In addition, we have determined that liability to us which may result, if any, cannot be reasonably estimated at this time because there is no prior history of a loss of this nature on which an estimate could be made and there is no substantive information available upon which an estimate could be based. In the matter titled County of Santa Clara v. Atlantic Richfield Company, et al Under the terms of the global settlement agreement, each defendant must pay an aggregate $101.7 million to the plaintiffs as follows: $25.0 million within sixty days of the court’s approval of the settlement and dismissal of the case, and the remaining $76.7 million in six annual installments beginning on the first anniversary of the initial payment ($12.0 million for the first For financial reporting purposes, using a discount rate of 1.9% per annum, we discounted the aggregate $101.7 million settlement to the estimated net present value of $96.3 million. We made the initial $25.0 million payment in September 2019 and the first, second, third and fourth annual installment payments of $12.0 million each in September 2020, 2021, 2022 and 2023. We recognized an aggregate accretion expense of $1.1 million, $.9 million, and $.7 million in 2021, 2022, and 2023 respectively. New cases may continue to be filed against us. We do not know if we will incur liability in the future in respect of any of the pending or possible litigation in view of the inherent uncertainties involved in court and jury rulings. In the future, if new information regarding such matters becomes available to us (such as a final, non-appealable adverse verdict against us or otherwise ultimately being found liable with respect to such matters), at that time we would consider such information in evaluating any remaining cases then-pending against us as to whether it might then have become probable we have incurred liability with respect to these matters, and whether such liability, if any, could have become reasonably estimable. The resolution of any of these cases could result in the recognition of a loss contingency accrual that could have a material adverse impact on our net income for the interim or annual period during which such liability is recognized and a material adverse impact on our consolidated financial condition and liquidity. Environmental matters and litigation Our operations are governed by various environmental laws and regulations. Certain of our businesses are and have been engaged in the handling, manufacture or use of substances or compounds that may be considered toxic or hazardous within the meaning of applicable environmental laws and regulations. As with other companies engaged in similar businesses, certain of our past and current operations and products have the potential to cause environmental or other damage. We have implemented and continue to implement various policies and programs in an effort to minimize these risks. Our policy is to maintain compliance with applicable environmental laws and regulations at all of our plants and to strive to improve environmental performance. From time to time, we may be subject to environmental regulatory enforcement under U.S. statutes, the resolution of which typically involves the establishment of compliance programs. It is possible that future developments, such as stricter requirements of environmental laws and enforcement policies, could adversely affect our production, handling, use, storage, transportation, sale or disposal of such substances. We believe all of our facilities are in substantial compliance with applicable environmental laws. Certain properties and facilities used in our former operations, including divested primary and secondary lead smelters and former mining locations, are the subject of civil litigation, administrative proceedings or investigations arising under federal and state environmental laws and common law. Additionally, in connection with past operating practices, we are currently involved as a defendant, potentially responsible party (PRP) or both, pursuant to the Comprehensive Environmental Response, Compensation and Liability Act, as amended by the Superfund Amendments and Reauthorization Act (CERCLA), and similar state laws in various governmental and private actions associated with waste disposal sites, mining locations, and facilities that we or our predecessors, our subsidiaries or their predecessors currently or previously owned, operated or used, certain of which are on the United States Environmental Protection Agency’s (EPA) Superfund National Priorities List or similar state lists. These proceedings seek cleanup costs, damages for personal injury or property damage and/or damages for injury to natural resources. Certain of these proceedings involve claims for substantial amounts. Although we may be jointly and severally liable for these costs, in most cases we are only one of a number of PRPs who may also be jointly and severally liable, and among whom costs may be shared or allocated. In addition, we are occasionally named as a party in a number of personal injury lawsuits filed in various jurisdictions alleging claims related to environmental conditions alleged to have resulted from our operations. Obligations associated with environmental remediation and related matters are difficult to assess and estimate for numerous reasons including the: ● complexity and differing interpretations of governmental regulations, ● number of PRPs and their ability or willingness to fund such allocation of costs, ● financial capabilities of the PRPs and the allocation of costs among them, ● solvency of other PRPs, ● multiplicity of possible solutions, ● number of years of investigatory, remedial and monitoring activity required, ● uncertainty over the extent, if any, to which our former operations might have contributed to the conditions allegedly giving rise to such personal injury, property damage, natural resource and related claims, and ● number of years between former operations and notice of claims and lack of information and documents about the former operations. In addition, the imposition of more stringent standards or requirements under environmental laws or regulations, new developments or changes regarding site cleanup costs or the allocation of costs among PRPs, solvency of other PRPs, the results of future testing and analysis undertaken with respect to certain sites or a determination that we are potentially responsible for the release of hazardous substances at other sites, could cause our expenditures to exceed our current estimates. Actual costs could exceed accrued amounts or the upper end of the range for sites for which estimates have been made, and costs may be incurred for sites where no estimates presently can be made. Further, additional environmental and related matters may arise in the future. If we were to incur any future liability, this could have a material adverse effect on our consolidated financial statements, results of operations and liquidity. We record liabilities related to environmental remediation and related matters (including costs associated with damages for personal injury or property damage and/or damages for injury to natural resources) when estimated future expenditures are probable and reasonably estimable. We adjust such accruals as further information becomes available to us or as circumstances change. Unless the amounts and timing of such estimated future expenditures are fixed and reasonably determinable, we generally do not discount estimated future expenditures to their present value due to the uncertainty of the timing of the payout. We recognize recoveries of costs from other parties, if any, as assets when their receipt is deemed probable. At December 31, 2022 and 2023, we had not recognized any receivables for recoveries. We do not know and cannot estimate the exact time frame over which we will make payments for our accrued environmental and related costs. The timing of payments depends upon a number of factors, including but not limited to the timing of the actual remediation process; which in turn depends on factors outside of our control. At each balance sheet date, we estimate the amount of our accrued environmental and related costs which we expect to pay within the next twelve months, and we classify this estimate as a current liability. We classify the remaining accrued environmental costs as a noncurrent liability. The table below presents a summary of the activity in our accrued environmental costs during the past three years. The amount charged to expense is included in corporate expense on our Consolidated Statements of Operations. Years ended December 31, 2021 2022 2023 (In thousands) Balance at the beginning of the period $ 93,416 $ 92,940 $ 92,358 Additions charged to expense, net 788 486 558 Payments, net (1,264) (1,068) (1,810) Balance at the end of the period $ 92,940 $ 92,358 $ 91,106 Amounts recognized in the balance sheet: Current liability $ 2,643 $ 2,627 $ 1,655 Noncurrent liability 90,297 89,731 89,451 Balance at the end of the period $ 92,940 $ 92,358 $ 91,106 On a quarterly basis, we evaluate the potential range of our liability for environmental remediation and related costs at sites where we have been named as a PRP or defendant, including sites for which our wholly-owned environmental management subsidiary, NL Environmental Management Services, Inc. (EMS), has contractually assumed our obligations. At December 31, 2023, we had accrued approximately $91 million related to approximately 33 sites associated with remediation and related matters we believe are at the present time and/or in their current phase reasonably estimable. The upper end of the range of reasonably possible costs to us for remediation and related matters for which we believe it is possible to estimate costs is approximately $118 million, including the amount currently accrued. These accruals have not been discounted to present value. We believe it is not reasonably possible to estimate the range of costs for certain sites. At December 31, 2023, there were approximately five sites for which we are not currently able to reasonably estimate a range of costs. For these sites, generally the investigation is in the early stages, and we are unable to determine whether or not we actually had any association with the site, the nature of our responsibility, if any, for the contamination at the site, if any, and the extent of contamination at and cost to remediate the site. The timing and availability of information on these sites is dependent on events outside of our control, such as when the party alleging liability provides information to us. At certain of these previously inactive sites, we have received general and special notices of liability from the EPA and/or state agencies alleging that we, sometimes with other PRPs, are liable for past and future costs of remediating environmental contamination allegedly caused by former operations. These notifications may assert that we, along with any other alleged PRPs, are liable for past and/or future clean-up costs. As further information becomes available to us for any of these sites which would allow us to estimate a range of costs, we would at that time adjust our accruals. Any such adjustment could result in the recognition of an accrual that would have a material effect on our consolidated financial statements, results of operations and liquidity. Insurance coverage claims We are involved in certain legal proceedings with a number of our former insurance carriers regarding the nature and extent of the carriers’ obligations to us under insurance policies with respect to certain lead pigment and asbestos lawsuits. The issue of whether insurance coverage for defense costs or indemnity or both will be found to exist for our lead pigment and asbestos litigation depends upon a variety of factors and we cannot assure you that such insurance coverage will be available. We have agreements with certain of our former insurance carriers pursuant to which the carriers reimburse us for a portion of our future lead pigment litigation defense costs, and one such carrier reimburses us for a portion of our future asbestos litigation defense costs. We are not able to determine how much we will ultimately recover from these carriers for defense costs incurred by us because of certain issues that arise regarding which defense costs qualify for reimbursement. While we continue to seek additional insurance recoveries, we do not know if we will be successful in obtaining reimbursement for either defense costs or indemnity. Accordingly, we recognize insurance recoveries in income only when receipt of the recovery is probable and we are able to reasonably estimate the amount of the recovery. In this regard we received $.5 million in insurance recoveries in 2023 and recoveries in each of 2021 and 2022 were nominal. Other litigation In addition to the litigation described above, we and our affiliates are also involved in various other environmental, contractual, product liability, patent (or intellectual property), employment and other claims and disputes incidental to present and former businesses. In certain cases, we have insurance coverage for these items, although we do not expect additional material insurance coverage for environmental matters. We currently believe the disposition of all of these various other claims and disputes (including asbestos-related claims), individually and in the aggregate, should not have a material adverse effect on our consolidated financial position, results of operations or liquidity beyond the accruals already provided. Concentrations of credit risk Component products are sold primarily in North America to original equipment manufacturers. The ten largest customers related to our Component Products operations accounted for approximately 51% of total sales in 2021 and 52% in each of 2022 and 2023. One customer of CompX’s Security Products business accounted for 16% of total sales in 2021, 14% in 2022 and 24% in 2023 (of which 11% relates to a pilot project). One customer of CompX’s Marine Components business accounted for 12% of consolidated sales in 2022. Income taxes We are a party to a tax sharing agreement with Contran and Valhi providing for the allocation of tax liabilities and tax payments as described in Note 1. Under applicable law, we, as well as every other member of the Contran Tax Group, are each jointly and severally liable for the aggregate federal income tax liability of Contran and the other companies included in the Contran Tax Group for all periods in which we are included in the Contran Tax Group. Valhi has agreed, however, to indemnify us for any liability for income taxes of the Contran Tax Group in excess of our tax liability computed in accordance with the tax sharing agreement.

Financial instruments

Financial instruments	12 Months Ended
Financial instruments	Dec. 31, 2023
Financial instruments
Financial instruments	Note 17 - Financial instruments: See Note 5 for information on how we determine fair value of our marketable securities. The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2022 and 2023: December 31, 2022 December 31, 2023 Carrying Fair Carrying Fair amount value amount value (In thousands) Cash, cash equivalents and restricted cash $ 97,502 $ 97,502 $ 141,382 $ 141,382 Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2023
Recent Accounting Pronouncements
Recent Accounting Pronouncements	Note 18 Recent Accounting Pronouncements: In November 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2023
Summary of Significant Accounting Policies
Nature of our business	Nature of our business -
Organization	Organization Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to NL Industries, Inc. and its subsidiaries and affiliate, Kronos, taken as a whole.
Management's estimates	Management’s estimates
Principles of consolidation	Principles of consolidation
Currency translation	Currency translation
Cash and cash equivalents	C ash and cash equivalents
Restricted cash and cash equivalents	Restricted cash and cash equivalents with respect to certain workers compensation liabilities or legal settlements. To the extent the restricted amount relates to a recognized liability, we classify such restricted amount as either a current or noncurrent asset to correspond with the classification of the liability. To the extent the restricted amount does not relate to a recognized liability, we classify restricted cash as a current asset. Restricted cash equivalents classified as a current asset or a noncurrent asset are presented separately on our Consolidated Balance Sheets.
Marketable securities and securities transactions	Marketable securities and securities transactions Fair Value Measurements and Disclosures ● Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; ● Level 2 - Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the assets or liability; and ● Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. We classify all of our marketable securities as available-for-sale. We accumulate unrealized gains and losses on marketable debt securities as part of accumulated other comprehensive income (loss), net of related deferred income taxes. We recognize unrealized gains or losses on the marketable equity securities in Marketable equity securities on our Consolidated Statements of Operations. We base realized gains and losses upon the specific identification of the securities sold. See Notes 5 and 11.
Accounts receivable	Accounts receivable
Inventories and cost of sales	Inventories and cost of sales
Investment in Kronos Worldwide, Inc.	Investment in Kronos Worldwide, Inc.
Goodwill	Goodwill
Leases	Leases to time, we may also enter into an arrangement in which the right to use and control an identified underlying asset is embedded in another type of contract. We determine if an arrangement is a lease (including leases embedded in another type of contract) at inception. All of our leases are classified as operating leases under ASC Topic 842 Leases
Property and equipment; depreciation expense	Property and equipment; depreciation expense We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform impairment tests by comparing the estimated future undiscounted cash flows associated with the asset to the asset’s net carrying value to determine whether impairment exists.
Employee benefit plans	Employee benefit plans
Income taxes	Income taxes We recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities, including investments in our subsidiaries and affiliates who are not members of the Contran Tax Group and undistributed earnings of non-U.S. subsidiaries which are not deemed to be permanently reinvested. In addition, we recognize deferred income taxes with respect to the excess of the financial reporting carrying amount over the income tax basis of our direct investment in Kronos common stock because the exemption under GAAP to avoid recognition of such deferred income taxes is not available to us. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of such deferred tax assets that we believe does not meet the more-likely-than-not recognition criteria. We account for the tax effects of a change in tax law as a component of the income tax provision related to continuing operations in the period of enactment, including the tax effects of any deferred income taxes originally established through a financial statement component other than continuing operations (i.e. other comprehensive income). Changes in applicable income tax rates over time as a result of changes in tax law, or times in which a deferred income tax asset valuation allowance is initially recognized in one year and subsequently reversed in a later year, can give rise to “stranded” tax effects in accumulated other comprehensive income in which the net accumulated income tax (benefit) remaining in accumulated other comprehensive income does not correspond to the then-applicable income tax rate applied to the pre-tax amount which resides in accumulated other comprehensive income. As permitted by GAAP, our accounting policy is to remove any such stranded tax effect remaining in accumulated other comprehensive income, by recognizing an offset to our provision for income taxes related to continuing operations, only at the time when there is no remaining pre-tax amount in accumulated other comprehensive income. For accumulated other comprehensive income related to currency translation, this would occur only upon the sale or complete liquidation of one of our non-U.S. subsidiaries. For defined pension benefit plans and OPEB plans, this would occur whenever one of our subsidiaries which previously sponsored a defined benefit pension or OPEB plan had terminated such a plan and had no future obligation or plan asset associated with such a plan (such as in 2023 when we terminated our U.K. pension plan). We record a reserve for uncertain tax positions for tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. The amount of the benefit associated with our uncertain tax positions that we recognize is limited to the largest amount for which we believe the likelihood of realization is greater than 50%. We accrue penalties and interest on the difference between tax positions taken on our tax returns and the amount of benefit recognized for financial reporting purposes. We classify our reserves for uncertain tax positions in a separate current or noncurrent liability, depending on the nature of the tax position. See Note 13.
Environmental remediation costs	Environmental remediation costs
Net sales	Net sales Revenue from Contracts with Customers, Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our products. Prices for our products are based on terms specified in published list prices and purchase orders, which generally do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component. We state sales net of price, early payment and distributor discounts as well as volume rebates (collectively, variable consideration). Variable consideration, to the extent present, is not material and is recognized as the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. Differences, if any, between estimates of the amount of variable consideration to which we will be entitled and the actual amount of such variable consideration have not been material in the past. We occasionally receive partial or full consideration from our customers prior to the completion of our performance obligation (shipment of product). We record estimated deferred revenue on the amount to which we are most likely to be entitled and deferred revenue is recognized into revenue as our performance obligation has been satisfied. Deferred revenue has not been material in the past. We report any tax assessed by a governmental authority that we collect from our customers that is both imposed on and concurrent with our revenue-producing activities (such as sales, use, value added and excise taxes) on a net basis (meaning we do not recognize these taxes either in our revenues or in our costs and expenses). Frequently, we receive orders for products to be delivered over dates that may extend across reporting periods. We invoice for each delivery upon shipment and recognize revenue for each distinct shipment when all sales recognition criteria for that shipment have been satisfied. As scheduled delivery dates for these orders are within a one year period, under the optional exemption provided by ASC 606, we do not disclose sales allocated to future shipments of partially completed contracts.
Selling, general and administrative expenses; advertising costs; research and development costs	Selling, general and administrative expenses; advertising costs; research and development costs
Corporate expenses	Corporate expenses

Business and Geographic Infor_2

Business and Geographic Information (Tables)	12 Months Ended
Business and Geographic Information (Tables)	Dec. 31, 2023
Segments Geographical Areas [Abstract]
Schedule of Disaggregates Net Sales By Reporting Unit	Years ended December 31, 2021 2022 2023 (In thousands) Net sales: Security Products $ 105,124 $ 114,519 $ 121,182 Marine Components 35,691 52,043 40,105 Total $ 140,815 $ 166,562 $ 161,287
Geographical Information Attributable to Net Sales	Years ended December 31, 2021 2022 2023 (In thousands) Net sales - point of destination: United States $ 129,160 $ 153,982 $ 155,092 Canada 8,061 9,227 3,153 Mexico 589 722 829 Other 3,005 2,631 2,213 Total $ 140,815 $ 166,562 $ 161,287

Accounts and other receivable_2

Accounts and other receivables, net (Tables)	12 Months Ended
Accounts and other receivables, net (Tables)	Dec. 31, 2023
Accounts and other receivables, net
Schedule of Accounts Notes Loans and Financing Receivable	December 31, 2022 2023 (In thousands) Trade receivables - CompX $ 17,910 $ 17,131 Other receivables 30 40 Allowance for doubtful accounts (70) (70) Total $ 17,870 $ 17,101

Inventories, net (Tables)

Inventories, net (Tables)	12 Months Ended
Inventories, net (Tables)	Dec. 31, 2023
Inventories, net
Schedule of Inventories, Net	December 31, 2022 2023 (In thousands) Raw materials $ 6,245 $ 5,738 Work in process 19,983 19,042 Finished products 5,062 5,932 Total $ 31,290 $ 30,712

Marketable securities (Tables)

Marketable securities (Tables)	12 Months Ended
Marketable securities (Tables)	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of Marketable Securities	Fair value Cost or measurement Market amortized Unrealized level value cost gain (loss) (In thousands) December 31, 2022 Current assets - fixed income securities 2 $ 70,164 $ 70,226 $ (62) Noncurrent assets Valhi common stock 1 $ 26,350 $ 24,347 $ 2,003 December 31, 2023 Current assets - fixed income securities 2 $ 53,149 $ 53,181 $ (32) Noncurrent assets Valhi common stock 1 $ 18,194 $ 24,347 $ (6,153)

Investment in Kronos Worldwid_2

Investment in Kronos Worldwide, Inc. (Tables)	12 Months Ended
Investment in Kronos Worldwide, Inc. (Tables)	Dec. 31, 2023
Investment in Kronos Worldwide, Inc.
Changes in Carrying Value of Investment	Years ended December 31, 2021 2022 2023 (In millions) Balance at the beginning of the period $ 242.4 $ 264.8 $ 292.2 Equity in earnings (loss) of Kronos 34.3 31.9 (15.0) Dividends received from Kronos (25.4) (26.8) (26.8) Equity in Kronos' other comprehensive income (loss): Currency translation (2.1) (8.8) 1.1 Defined benefit pension plans 15.6 30.9 (3.9) Other postretirement benefit plans — — (.1) Other — .2 .1 Balance at the end of the period $ 264.8 $ 292.2 $ 247.6
Selected Financial Information of Kronos Balance Sheet	December 31, 2022 2023 (In millions) Current assets $ 1,242.2 $ 1,117.4 Property and equipment, net 484.5 482.9 Investment in TiO 2 112.9 111.0 Other noncurrent assets 94.8 126.7 Total assets $ 1,934.4 $ 1,838.0 Current liabilities $ 326.7 $ 370.8 Long-term debt 424.1 440.9 Accrued pension costs 128.6 150.0 Other noncurrent liabilities 97.8 68.0 Stockholders’ equity 957.2 808.3 Total liabilities and stockholders’ equity $ 1,934.4 $ 1,838.0
Selected Financial Information of Kronos Income Statement	December 31, 2022 2023 (In millions) Current assets $ 1,242.2 $ 1,117.4 Property and equipment, net 484.5 482.9 Investment in TiO 2 112.9 111.0 Other noncurrent assets 94.8 126.7 Total assets $ 1,934.4 $ 1,838.0 Current liabilities $ 326.7 $ 370.8 Long-term debt 424.1 440.9 Accrued pension costs 128.6 150.0 Other noncurrent liabilities 97.8 68.0 Stockholders’ equity 957.2 808.3 Total liabilities and stockholders’ equity $ 1,934.4 $ 1,838.0 Years ended December 31, 2021 2022 2023 (In millions) Net sales $ 1,939.4 $ 1,930.2 $ 1,666.5 Cost of sales 1,493.2 1,539.1 1,501.6 Income (loss) from operations 187.1 159.6 (56.0) Income tax expense (benefit) 40.5 29.4 (23.8) Net income (loss) 112.9 104.5 (49.1)

Other assets, net (Tables)

Other assets, net (Tables)	12 Months Ended
Other assets, net (Tables)	Dec. 31, 2023
Other assets, net
Schedule of Other Assets, Net	December 31, 2022 2023 (In thousands) Pension asset $ 1,105 $ — Other 1,418 2,060 Total $ 2,523 $ 2,060

Accrued and other current lia_2

Accrued and other current liabilities (Tables)	12 Months Ended
Accrued and other current liabilities (Tables)	Dec. 31, 2023
Accrued and other current liabilities
Schedule of Accrued and Other Current Liabilities	December 31, 2022 2023 (In thousands) Employee benefits $ 11,023 $ 11,290 Other 2,370 1,892 Total $ 13,393 $ 13,182

Employee benefit plans (Tables)

Employee benefit plans (Tables)	12 Months Ended
Employee benefit plans (Tables)	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Periodic Defined Benefit Cost (Income)	Years ended December 31, 2021 2022 2023 (In thousands) Net periodic pension cost: Interest cost $ 947 $ 1,138 $ 1,619 Expected return on plan assets (1,603) (1,552) (1,452) Plan settlement — 104 4,911 Recognized actuarial losses 1,562 1,664 1,391 Total $ 906 $ 1,354 $ 6,469
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected Benefit Payments	Years ending December 31, Amount (In thousands) 2024 $ 3,012 2025 2,923 2026 2,849 2027 2,766 2028 2,668 Next 5 years 11,725
Funded Status of Defined Benefit Plans	December 31, 2022 2023 (In thousands) Change in projected benefit obligations (PBO): Benefit obligations at beginning of the year $ 50,367 $ 36,090 Interest cost 1,138 1,619 Plan settlement (188) (5,537) Actuarial (gains) losses (10,777) 265 Change in currency exchange rates (965) 116 Benefits paid (3,485) (3,115) Benefit obligations at end of the year 36,090 29,438 Change in plan assets: Fair value of plan assets at beginning of the year 47,940 34,126 Actual return on plan assets (10,263) 2,009 Employer contributions 1,228 196 Plan settlement (188) (5,537) Change in currency exchange rates (1,106) 131 Benefits paid (3,485) (3,115) Fair value of plan assets at end of year 34,126 27,810 Funded status $ (1,964) $ (1,628) Amounts recognized in the balance sheet: Noncurrent pension asset $ 1,105 $ — Accrued pension costs: Current (57) (57) Noncurrent (3,012) (1,571) Total (1,964) (1,628) Accumulated other comprehensive loss - actuarial losses, net 27,530 21,802 Total $ 25,566 $ 20,174 Accumulated benefit obligations (ABO) $ 36,090 $ 29,438
Changes in Other Comprehensive Income (Loss)	Years ended December 31, 2021 2022 2023 (In thousands) Changes in plan assets and benefit obligations recognized in Net actuarial gain (loss) arising during the year $ 1,618 $ (1,034) $ (574) Plan settlement — 104 4,911 Amortization of unrecognized net actuarial gain (loss) (1,562) 1,664 1,391 Total $ 56 $ 734 $ 5,728
Information Concerning Defined Benefit Pension Plans (Including Certain Plans for Which ABO Exceeds Fair Value of Plan Assets)	December 31, 2022 2023 (In thousands) PBO at end of the year: U.S. plan $ 30,254 $ 29,438 U.K. plan 5,836 — Total $ 36,090 $ 29,438 Fair value of plan assets at end of the year: U.S. plan $ 27,185 $ 27,810 U.K. plan 6,941 — Total $ 34,126 $ 27,810 Plans for which the ABO exceeds plan assets (only our U.S. plan): PBO $ 30,254 $ 29,438 ABO 30,254 29,438 Fair value of plan assets 27,185 27,810
Summary of Assumptions Used to Determine Net Benefit Obligation	Years ended December 31, Rate 2021 2022 2023 Discount rate 2.1 % 2.3 % 5.1 % Long-term rate of return on plan assets 3.3 % 3.3 % 4.9 %
Schedule of composition of our pension plan assets by fair value level	Fair Value Measurements Quoted prices Significant other Significant in active observable unobservable Assets measured Total markets (Level 1) inputs (Level 2) inputs (Level 3) at NAV (In thousands) December 31, 2022: U.S.: Equities $ 8,591 $ 694 $ — $ — $ 7,897 Fixed income 15,954 149 — — 15,805 Cash and other 2,640 1,903 — 44 693 U.K. - Other 6,941 1,104 — 5,837 — Total $ 34,126 $ 3,850 $ — $ 5,881 $ 24,395 As noted above, in March 2021 we purchased a bulk annuity for our U.K. pension plan and such annuity is considered a Level 3 asset included with “U.K. – Other” in the table above. Fair Value Measurements Quoted prices Significant other Significant in active observable unobservable Assets measured Total markets (Level 1) inputs (Level 2) inputs (Level 3) at NAV (In thousands) December 31, 2023: U.S.: Equities $ 7,786 $ — $ — $ — $ 7,786 Fixed income 18,733 — — — 18,733 Cash and other 1,291 489 — 41 761 Total $ 27,810 $ 489 $ — $ 41 $ 27,280

Other noncurrent liabilities (T

Other noncurrent liabilities (Tables)	12 Months Ended
Other noncurrent liabilities (Tables)	Dec. 31, 2023
Other noncurrent liabilities
Summary of Other Noncurrent Liabilities	December 31, 2022 2023 (In thousands) Reserve for uncertain tax positions $ 2,714 $ 3,707 OPEB 637 524 Insurance claims and expenses 625 579 Other 303 264 Total $ 4,279 $ 5,074

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
Income taxes (Tables)	Dec. 31, 2023
Income taxes
Schedule of Income Taxes	Years ended December 31, 2021 2022 2023 (In thousands) Expected tax expense (benefit), at U.S. federal statutory $ 12,776 $ 8,241 $ (1,348) Nontaxable dividends received from Kronos (5,325) (5,621) (5,621) U.S. state income taxes and other, net 28 165 (32) Income tax expense (benefit) $ 7,479 $ 2,785 $ (7,001) Components of income tax expense (benefit): Currently payable $ 26 $ 495 $ 307 Deferred income tax expense (benefit) 7,453 2,290 (7,308) Income tax expense (benefit) $ 7,479 $ 2,785 $ (7,001) Comprehensive provision (benefit) for income taxes allocable to: Net income $ 7,479 $ 2,785 $ (7,001) Other comprehensive income: Currency translation (429) (1,849) 241 Pension plans 3,252 6,542 (291) OPEB plans (44) 69 (35) Total $ 10,258 $ 7,547 $ (7,086)
Components of Net Deferred Tax Liability	December 31, 2022 2023 Assets Liabilities Assets Liabilities (In thousands) Tax effect of temporary differences related to: Inventories $ 369 $ — $ 373 $ — Marketable securities — (5,290) — (3,586) Property and equipment — (2,025) — (1,467) Accrued OPEB costs 168 — 139 — Accrued pension costs 412 — 124 — Accrued employee benefits 1,342 — 1,421 — Accrued environmental liabilities 24,332 — 21,332 — Goodwill — (1,693) — (1,693) Other accrued liabilities and deductible differences 161 — 149 — Other taxable differences — (2,391) — (2,392) Investment in Kronos Worldwide, Inc. — (65,504) — (56,133) Adjusted gross deferred tax assets (liabilities) 26,784 (76,903) 23,538 (65,271) Netting of items by tax jurisdiction (26,784) 26,784 (23,538) 23,538 Net noncurrent deferred tax liability $ — $ (50,119) $ — $ (41,733)

Stockholders' equity (Tables)

Stockholders' equity (Tables)	12 Months Ended
Stockholders' equity (Tables)	Dec. 31, 2023
Stockholders' equity
Schedule of Changes in Accumulated Other Comprehensive Loss	Years ended December 31, 2021 2022 2023 (In thousands) Accumulated other comprehensive loss, net of tax: Currency translation: Balance at beginning of period $ (169,575) $ (171,235) $ (178,191) Other comprehensive income (loss) (1,660) (6,956) 1,072 Balance at end of period $ (171,235) $ (178,191) $ (177,119) Defined benefit pension plans: Balance at beginning of period $ (80,704) $ (68,468) $ (43,857) Other comprehensive income (loss): Amortization of prior service cost and net losses included in 4,813 3,592 1,436 Net actuarial gain (loss) arising during the year 7,423 20,881 (3,094) Plan settlement — 138 4,142 Balance at end of period $ (68,468) $ (43,857) $ (41,373) OPEB plans: Balance at beginning of period $ (910) $ (1,053) $ (893) Other comprehensive income (loss): Amortization of net gain included in net periodic (143) (369) (357) Net actuarial gain arising during the year — 529 136 Balance at end of period $ (1,053) $ (893) $ (1,114) Marketable debt securities: Balance at beginning of period $ — $ — $ (50) Other comprehensive income (loss) - unrealized gain (loss) — (50) 35 Balance at end of period $ — $ (50) $ (15) Total accumulated other comprehensive loss: Balance at beginning of period $ (251,189) $ (240,756) $ (222,991) Other comprehensive income 10,433 17,765 3,370 Balance at end of period $ (240,756) $ (222,991) $ (219,621)

Related party transactions (Tab

Related party transactions (Tables)	12 Months Ended
Related party transactions (Tables)	Dec. 31, 2023
Related party transactions
Current Receivables and Payables to Affiliates	December 31, 2022 2023 (In thousands) Current receivables from affiliates: Other receivables from affiliates $ — $ 601 Income taxes receivable from Valhi 636 27 $ 636 $ 628 Current payables to affiliates: Other - trade items $ 665 $ 634

Commitments and contingencies (

Commitments and contingencies (Tables)	12 Months Ended
Commitments and contingencies (Tables)	Dec. 31, 2023
Commitments and contingencies.
Schedule of Changes in Accrued Environmental Remediation and Related Costs	Years ended December 31, 2021 2022 2023 (In thousands) Balance at the beginning of the period $ 93,416 $ 92,940 $ 92,358 Additions charged to expense, net 788 486 558 Payments, net (1,264) (1,068) (1,810) Balance at the end of the period $ 92,940 $ 92,358 $ 91,106 Amounts recognized in the balance sheet: Current liability $ 2,643 $ 2,627 $ 1,655 Noncurrent liability 90,297 89,731 89,451 Balance at the end of the period $ 92,940 $ 92,358 $ 91,106

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
Financial instruments (Tables)	Dec. 31, 2023
Financial instruments
Summary of Financial Instruments Not Carried at Fair Value	The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2022 and 2023: December 31, 2022 December 31, 2023 Carrying Fair Carrying Fair amount value amount value (In thousands) Cash, cash equivalents and restricted cash $ 97,502 $ 97,502 $ 141,382 $ 141,382

Organization and basis of prese

Organization and basis of presentation - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Income taxes, net	$ (300)	$ 1,140	$ 32
Received net refunds for income taxes	$ 300
Uncertain tax positions	50%
Research, development and certain sales technical support costs	$ 0	0	$ 0
Environmental Remediation Litigation
Significant Accounting Policies [Line Items]
Recoveries receivable	$ 0	$ 0
Minimum \| Building
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	15 years
Minimum \| Equipment and Software
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	3 years
Maximum \| Building
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	40 years
Maximum \| Equipment and Software
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	20 years
Kronos
Significant Accounting Policies [Line Items]
Parent company ownership interest	31%
CompX
Significant Accounting Policies [Line Items]
Percentage of controlling interest owned	13%
Parent Company \| Valhi Inc
Significant Accounting Policies [Line Items]
Parent company ownership interest	83%
Parent Company \| Valhi Inc \| Contran Corporation
Significant Accounting Policies [Line Items]
Parent company ownership interest	91%

Business and Geographic Infor_3

Business and Geographic Information - Schedule of Disaggregates Net Sales By Reporting Unit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Net sales	$ 161,287	$ 166,562	$ 140,815
Security Products
Disaggregation Of Revenue [Line Items]
Net sales	121,182	114,519	105,124
Marine Components
Disaggregation Of Revenue [Line Items]
Net sales	$ 40,105	$ 52,043	$ 35,691

Business and Geographic Infor_4

Business and Geographic Information - Geographical Information Attributable to Net Sales (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 161,287	$ 166,562	$ 140,815
Point of destination
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	161,287	166,562	140,815
United States \| Point of destination
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	155,092	153,982	129,160
Canada \| Point of destination
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	3,153	9,227	8,061
Mexico \| Point of destination
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	829	722	589
Other \| Point of destination
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 2,213	$ 2,631	$ 3,005

Accounts and other receivable_3

Accounts and other receivables, net - Schedule of Accounts Notes Loans and Financing Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts and other receivables, net
Other receivables	$ 40	$ 30
Total	17,101	17,870
CompX
Accounts and other receivables, net
Trade receivables	17,131	17,910
Allowance for doubtful accounts	$ (70)	$ (70)

Inventories, net - Schedule of

Inventories, net - Schedule of Inventories, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Inventories, net
Raw materials	$ 5,738	$ 6,245
Work in process	19,042	19,983
Finished products	5,932	5,062
Total	$ 30,712	$ 31,290

Marketable securities - Schedul

Marketable securities - Schedule of Marketable Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Market value, Current assets	$ 53,149	$ 70,164
Market value, Noncurrent assets	18,194	26,350
Level 1 \| Valhi Inc \| Common stock
Marketable Securities [Line Items]
Market value, Noncurrent assets	18,194	26,350
Cost or amortized cost, Noncurrent assets	24,347	24,347
Unrealized gain (loss), Noncurrent assets	(6,153)	2,003
Level 2 \| Fixed income securities
Marketable Securities [Line Items]
Market value, Current assets	53,149	70,164
Cost or amortized cost, Current Assets	53,181	70,226
Unrealized gain (loss), Current assets	$ (32)	$ (62)

Marketable securities - Additio

Marketable securities - Additional Information (Detail) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Minimum
Marketable Securities [Line Items]
Maturity term of current marketable securities invested	4 months
Maximum
Marketable Securities [Line Items]
Maturity term of current marketable securities invested	12 months
Valhi Inc \| Common stock
Marketable Securities [Line Items]
Number of shares owned	1.2	1.2
Quoted marked price per share	$ 15.19	$ 22

Investment in Kronos Worldwid_3

Investment in Kronos Worldwide, Inc. - Additional Information (Detail) - Kronos - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Number of shares owned	35.2
Aggregate market value	$ 350.1	$ 331.1
Quoted market price per share	$ 9.94	$ 9.40

Investment in Kronos Worldwid_4

Investment in Kronos Worldwide, Inc. - Changes in Carrying Value of Investment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Balance at the beginning of the period	$ 292,206
Equity in earnings (loss) of Kronos	(15,003)	$ 31,873	$ 34,323
Dividends received from Kronos	(26,766)	(26,766)	(25,356)
Equity in Kronos' other comprehensive income (loss):
Balance at the end of the period	247,582	292,206
Defined Benefit Pension Plans
Equity in Kronos' other comprehensive income (loss):
Defined benefit pension plans	(5,728)	(734)	(56)
Kronos
Schedule Of Equity Method Investments [Line Items]
Balance at the beginning of the period	292,200	264,800	242,400
Equity in earnings (loss) of Kronos	(15,000)	31,900	34,300
Dividends received from Kronos	(26,800)	(26,800)	(25,400)
Equity in Kronos' other comprehensive income (loss):
Currency translation	1,100	(8,800)	(2,100)
Other	100	200
Balance at the end of the period	247,600	292,200	264,800
Kronos \| Defined Benefit Pension Plans
Equity in Kronos' other comprehensive income (loss):
Defined benefit pension plans	(3,900)	$ 30,900	$ 15,600
Kronos \| OPEB
Equity in Kronos' other comprehensive income (loss):
Defined benefit pension plans	$ (100)

Investment in Kronos Worldwid_5

Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 218,264	$ 193,968
Property and equipment, net	25,863	28,694
Other noncurrent assets	2,060	2,523
Total assets	576,662	609,867
Current liabilities	30,449	32,052
Accrued pension costs	1,571	3,012
Other noncurrent liabilities	5,074	4,279
Stockholders' equity	369,812	382,150
Total liabilities and stockholders' equity	576,662	609,867
Kronos \| Reportable Legal Entities
Schedule Of Equity Method Investments [Line Items]
Current assets	1,117,400	1,242,200
Property and equipment, net	482,900	484,500
Investment in TiO2 joint venture	111,000	112,900
Other noncurrent assets	126,700	94,800
Total assets	1,838,000	1,934,400
Current liabilities	370,800	326,700
Long-term debt	440,900	424,100
Accrued pension costs	150,000	128,600
Other noncurrent liabilities	68,000	97,800
Stockholders' equity	808,300	957,200
Total liabilities and stockholders' equity	$ 1,838,000	$ 1,934,400

Investment in Kronos Worldwid_6

Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Income Statement (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Net sales	$ 161,287	$ 166,562	$ 140,815
Cost of sales	112,068	117,763	98,066
Income (loss) from operations	14,129	13,731	10,491
Income tax expense (benefit)	(7,001)	2,785	7,479
Net income (loss)	(2,308)	33,844	51,188
Kronos \| Reportable Legal Entities
Schedule Of Equity Method Investments [Line Items]
Net sales	1,666,500	1,930,200	1,939,400
Cost of sales	1,501,600	1,539,100	1,493,200
Income (loss) from operations	(56,000)	159,600	187,100
Income tax expense (benefit)	(23,800)	29,400	40,500
Net income (loss)	$ (49,100)	$ 104,500	$ 112,900

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
Goodwill - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Increase (decrease) in carrying amount of goodwill	$ 0	$ 0	$ 0
Goodwill impairment	0	$ 0	$ 0
Gross goodwill	$ 43,700,000
EWI Re, Inc.
Goodwill [Line Items]
Goodwill impairment				$ 6,400,000
CompX \| Marine Components
Goodwill [Line Items]
Goodwill impairment				$ 10,100,000

Other assets, net - Schedule of

Other assets, net - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other assets, net
Pension asset		$ 1,105
Other	$ 2,060	1,418
Total	$ 2,060	$ 2,523

Accrued and other current lia_3

Accrued and other current liabilities - Schedule of Accrued and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accrued and other current liabilities
Employee benefits	$ 11,290	$ 11,023
Other	1,892	2,370
Total	$ 13,182	$ 13,393

Long-term debt - Additional Inf

Long-term debt - Additional Information (Detail) - NLKW Holding, LLC - USD ($) shares in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2016	Dec. 31, 2023	Dec. 31, 2022
Kronos
Debt Instrument [Line Items]
Asset contribution, equity security shares	35.2
Back-To-Back Credit Facility
Debt Instrument [Line Items]
Maximum borrowing under credit facility	$ 50
Percentage of membership interest in subsidiary	100%
Valhi \| Valhi Credit Facility
Debt Instrument [Line Items]
Maximum borrowing under credit facility	$ 50
Line of credit facility frequency of payment of interest		quarterly
Maximum principle outstanding, percentage of collateral value	50%
Debt instrument collateral		100% of the membership interest in NLKW held by us
Percentage of membership interest in subsidiary	100%
Outstanding borrowing		$ 0.5	$ 0.5
Variable rate basis spread above reference rate	1.875%
Debt instrument interest rate		10.40%
Average interest rate		10.10%
Valhi \| Stock Repurchase Rights [Member] \| Valhi Credit Facility
Debt Instrument [Line Items]
Stock repurchase, maximum debt percentage	50%
Debt instrument maturity period		5 years
Variable rate basis spread above reference rate	2.75%

Employee Benefit Plans - Expect

Employee Benefit Plans - Expected Benefit Payments (Detail) - Defined Benefit Pension Plans $ in Thousands	Dec. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
2024	$ 3,012
2025	2,923
2026	2,849
2027	2,766
2028	2,668
Next 5 years	$ 11,725

Employee Benefit Plans - Funded

Employee Benefit Plans - Funded Status of Defined Benefit Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1,619	$ 1,138	$ 947
Noncurrent pension asset		1,105
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations at beginning of the year	36,090	50,367
Interest cost	1,619	1,138
Plan settlement	(5,537)	(188)
Actuarial (gains) losses	265	(10,777)
Change in currency exchange rates	116	(965)
Benefits paid	(3,115)	(3,485)
Benefit obligations at end of the year	29,438	36,090	50,367
Fair value of plan assets at beginning of the year	34,126	47,940
Actual return loss on plan assets	2,009	(10,263)
Employer contributions	196	1,228
Plan settlement	(5,537)	(188)
Change in currency exchange rates	131	(1,106)
Benefits paid	(3,115)	(3,485)
Fair value of plan assets at end of year	27,810	34,126	$ 47,940
Funded status	(1,628)	(1,964)
Noncurrent pension asset		1,105
Current	(57)	(57)
Noncurrent	(1,571)	(3,012)
Amounts recognized in the Consolidated Balance Sheets	(1,628)	(1,964)
Accumulated other comprehensive loss - actuarial losses, net	21,802	27,530
Total	20,174	25,566
Accumulated benefit obligations (ABO)	$ 29,438	$ 36,090

Employee benefit plans - Compon

Employee benefit plans - Components of Net Periodic Defined Benefit Cost (Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1,619	$ 1,138	$ 947
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
Plan settlement	$ (4,911)	$ (104)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
Expected return on plan assets	$ (1,452)	$ (1,552)	$ (1,603)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
Recognized actuarial losses	$ 1,391	$ 1,664	$ 1,562
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax	Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
Total	$ 6,469	$ 1,354	$ 906
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1,619	$ 1,138

Employee Benefit Plans - Change

Employee Benefit Plans - Changes in Other Comprehensive Income (Loss) (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss) arising during the year	$ (574)	$ (1,034)	$ 1,618
Plan settlement	4,911	104
Amortization of unrecognized net actuarial gain (loss)	1,391	1,664	(1,562)
Total	$ 5,728	$ 734	$ 56

Employee benefit plans - Additi

Employee benefit plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Loss on pension plan termination		$ 4,911
Loss on pension plan termination		(4,911)	$ (104)
Defined contribution pension plans		$ 3,900	3,900	$ 3,700
Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets		7%
Plan asset target allocation		33%
Fixed Income \| United States
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets		5%
Plan asset target allocation		59%
Funds \| Assets Measured at NAV \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets		98%
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Loss on pension plan termination	$ 4,900
Plan benefit obligation		$ 29,438	36,090	50,367
Fair value of plan assets		27,810	34,126	$ 47,940
Expected contributions to Defined Benefit Plans in Next Fiscal Year		1,000
Net underfunded status of defined benefit pension plans		$ 1,628	$ 1,964
Weighted-average rate determining the actuarial present value of benefit obligation		5%	5.10%
Long-term return on plan assets		4.90%	3.30%	3.30%
Defined Benefit Pension Plans \| United States
Defined Benefit Plan Disclosure [Line Items]
Plan benefit obligation		$ 29,438	$ 30,254
Fair value of plan assets		27,810	27,185
Defined Benefit Pension Plans \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		27,280	24,395
Defined Benefit Pension Plans \| Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		7,786	8,591
Defined Benefit Pension Plans \| Equities \| Assets Measured at NAV \| United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		7,786	7,897
Defined Benefit Pension Plans \| Fixed Income \| United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		18,733	15,954
Defined Benefit Pension Plans \| Fixed Income \| Assets Measured at NAV \| United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 18,733	$ 15,805

Employee Benefit Plans - Inform

Employee Benefit Plans - Information Concerning Defined Benefit Pension Plans (Including Certain Plans for Which ABO Exceeds Fair Value of Plan Assets) (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
PBO	$ 29,438	$ 36,090	$ 50,367
Fair value of plan assets	27,810	34,126	$ 47,940
PBO for plans for which ABO exceeds plan assets	29,438	30,254
ABO for plans for which ABO exceeds plan assets	29,438	30,254
Fair value of plan assets for plans for which ABO exceeds plan assets	27,810	27,185
United States
Defined Benefit Plan Disclosure [Line Items]
PBO	29,438	30,254
Fair value of plan assets	$ 27,810	27,185
U.K.
Defined Benefit Plan Disclosure [Line Items]
PBO		5,836
Fair value of plan assets		$ 6,941

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Weighted-Average Assumptions Used to Determine Net Benefit Obligation (Detail) - Defined Benefit Pension Plans	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.10%	2.30%	2.10%
Long-term rate of return on plan assets	4.90%	3.30%	3.30%

Employee Benefit Plans - Compos

Employee Benefit Plans - Composition of Pension Plan Assets by Fair Value Level (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Total	$ 27,810	$ 34,126	$ 47,940
United States
Defined Benefit Plan Disclosure [Line Items]
Total	27,810	27,185
U.K.
Defined Benefit Plan Disclosure [Line Items]
Total		6,941
Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	7,786	8,591
Fixed Income \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	18,733	15,954
Cash and Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	1,291	2,640
Others \| U.K.
Defined Benefit Plan Disclosure [Line Items]
Total		6,941
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	489	3,850
Level 1 \| Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Total		694
Level 1 \| Fixed Income \| United States
Defined Benefit Plan Disclosure [Line Items]
Total		149
Level 1 \| Cash and Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	489	1,903
Level 1 \| Others \| U.K.
Defined Benefit Plan Disclosure [Line Items]
Total		1,104
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	41	5,881
Level 3 \| Cash and Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	41	44
Level 3 \| Others \| U.K.
Defined Benefit Plan Disclosure [Line Items]
Total		5,837
Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Total	27,280	24,395
Assets Measured at NAV \| Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	7,786	7,897
Assets Measured at NAV \| Fixed Income \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	18,733	15,805
Assets Measured at NAV \| Cash and Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Total	$ 761	$ 693

Other noncurrent liabilities -

Other noncurrent liabilities - Summary of Other Noncurrent Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other noncurrent liabilities
Reserve for uncertain tax positions	$ 3,707	$ 2,714
OPEB	524	637
Insurance claims and expenses	579	625
Other	264	303
Total	$ 5,074	$ 4,279

Income taxes - Component of Inc

Income taxes - Component of Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income taxes
Expected tax expense (benefit), at U.S. federal statutory income tax rate of 21%	$ (1,348)	$ 8,241	$ 12,776
Nontaxable dividends received from Kronos	(5,621)	(5,621)	(5,325)
U.S. state income taxes and other, net	(32)	165	28
Income tax expense (benefit)	$ (7,001)	$ 2,785	$ 7,479

Income Taxes - Component of I_2

Income Taxes - Component of Income Taxes Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Components of income tax expense (benefit):
Currently payable	$ 307	$ 495	$ 26
Deferred income tax expense (benefit)	(7,308)	2,290	7,453
Income tax expense (benefit)	$ (7,001)	$ 2,785	$ 7,479

Income taxes - Components of Co

Income taxes - Components of Comprehensive Provision for Income Taxes Allocation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Comprehensive provision for income taxes allocable to:
Net income	$ (7,001)	$ 2,785	$ 7,479
Other comprehensive income (loss):
Currency translation	241	(1,849)	(429)
Total	(7,086)	7,547	10,258
Defined Benefit Pension Plans
Other comprehensive income (loss):
Pension plans	(291)	6,542	3,252
OPEB
Other comprehensive income (loss):
Defined benefit plans	$ (35)	$ 69	$ (44)

Income taxes - Additional Infor

Income taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Dividends received from Kronos Worldwide, Inc.	$ 26,766	$ 26,766	$ 25,356
Deferred Tax Assets, Operating Loss Carryforwards	11,800
Gross unrecognized tax benefits	7,300	7,300	7,300
Uncertain tax position	3,707	2,714
Unrecognized tax benefits, if recognize which would affect effective tax rate	7,300
Currently payable	307	495	26
Payables to affiliates	634	665
Noncurrent payable to affiliate	5,074	4,279
Federal Income Tax Purposes
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 3,600
Net operating loss carryforwards expiration description	an indefinite carryforward period subject to an 80% annual usage limitation.
Kronos
Income Tax Disclosure [Line Items]
Dividends received from Kronos Worldwide, Inc.	$ 26,800	26,800	$ 25,400
Deferred income tax asset valuation allowance	0
Deferred Tax Assets	3,500	$ 900
Non-cash deferred income tax expense	2,600
Unpaid transition tax payable	33,500
Kronos \| Related Party \| Valhi
Income Tax Disclosure [Line Items]
Payables to affiliates	14,900
Noncurrent payable to affiliate	$ 18,600
Kronos \| Canada
Income Tax Disclosure [Line Items]
Operating loss carryforwards expiration period	20 years
Kronos \| Deferred Tax Liability Non Current
Income Tax Disclosure [Line Items]
Uncertain tax position	$ 3,600
Kronos \| Corporate Tax Purposes \| German
Income Tax Disclosure [Line Items]
Operating Loss Carryforwards	478,700
Deferred Tax Assets, Operating Loss Carryforwards	75,800
Kronos \| Corporate Tax Purposes \| Belgium
Income Tax Disclosure [Line Items]
Operating Loss Carryforwards	47,000
Kronos \| Corporate Tax Purposes \| Canada
Income Tax Disclosure [Line Items]
Operating Loss Carryforwards	31,500
Deferred Tax Assets, Operating Loss Carryforwards	4,700
Kronos \| Trade Tax Purposes \| German
Income Tax Disclosure [Line Items]
Operating Loss Carryforwards	54,500
Deferred Tax Assets, Operating Loss Carryforwards	5,900
Kronos \| Provincial Tax Purposes \| Canada
Income Tax Disclosure [Line Items]
Operating Loss Carryforwards	34,900
Deferred Tax Assets, Operating Loss Carryforwards	$ 4,000
Kronos European Subsidiaries \| Transition Tax
Income Tax Disclosure [Line Items]
Currently payable				$ 74,500
Current income tax expense payment period				8 years

Income Taxes - Component of I_3

Income Taxes - Component of Income Taxes (Parenthetical) (Detail)	36 Months Ended
	Dec. 31, 2023
Income taxes
U.S. federal statutory income tax rate	21%

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Liability (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Components of Deferred Tax Assets and Liabilities [Abstract]
Inventories	$ 373,000	$ 369,000
Accrued OPEB costs	139,000	168,000
Accrued pension costs	124,000	412,000
Accrued employee benefits	1,421,000	1,342,000
Accrued environmental liabilities	21,332,000	24,332,000
Other accrued liabilities and deductible differences	149,000	161,000
Adjusted gross deferred tax assets (liabilities)	23,538,000	26,784,000
Netting of items by tax jurisdiction	(23,538,000)	(26,784,000)
Marketable securities	(3,586,000)	(5,290,000)
Property and equipment	(1,467,000)	(2,025,000)
Goodwill	(1,693,000)	(1,693,000)
Other taxable differences	(2,392,000)	(2,391,000)
Investment in Kronos Worldwide, Inc.	(56,133,000)	(65,504,000)
Adjusted gross deferred tax assets (liabilities)	(65,271,000)	(76,903,000)
Netting of items by tax jurisdiction	23,538,000	26,784,000
Net noncurrent deferred tax liability	(41,733,000)	(50,119,000)
Net noncurrent deferred tax liability	$ (41,733)	$ (50,119)

Stockholders' equity - Schedule

Stockholders' equity - Schedule of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	$ 382,150
Balance at end of period	369,812	$ 382,150
Currency Translation
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(178,191)	(171,235)	$ (169,575)
Other comprehensive loss	1,072	(6,956)	(1,660)
Balance at end of period	(177,119)	(178,191)	(171,235)
Accumulated Defined Benefit Plans Adjustment \| Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(43,857)	(68,468)	(80,704)
Other comprehensive loss	1,436	3,592	4,813
Net actuarial gain (loss) arising during year	(3,094)	20,881	7,423
Plan settlement	4,142	138
Balance at end of period	(41,373)	(43,857)	(68,468)
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(50)
Other comprehensive loss	35	(50)	0
Balance at end of period	(15)	(50)
Other \| OPEB
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(893)	(1,053)	(910)
Other comprehensive loss	(357)	(369)	(143)
Net actuarial gain (loss) arising during year	136	529
Balance at end of period	(1,114)	(893)	(1,053)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at beginning of period	(222,991)	(240,756)	(251,189)
Other comprehensive loss	3,370	17,765	10,433
Balance at end of period	$ (219,621)	$ (222,991)	$ (240,756)

Stockholders' equity - Addition

Stockholders' equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class Of Stock [Line Items]
Payments of dividends	$ 13.7	$ 13.7	$ 11.7
Special dividend declared and paid	$ 17.1
Special dividend declared and paid (per share)	$ 0.35
Quarterly dividends paid (in dollars per share)	$ 0.07	$ 0.07	$ 0.06
Kronos
Class Of Stock [Line Items]
Number of shares purchased in market transaction		2,000
NL
Class Of Stock [Line Items]
Common stock awarded to board of directors	17,750	15,000	13,750
Shares available for award	200,000
NL \| Maximum
Class Of Stock [Line Items]
Aggregate of common stock awarded to directors			200,000
CompX
Class Of Stock [Line Items]
Number of shares available for purchase under repurchase authorizations	523,647
Shares available for award	124,450
CompX \| Common Class A
Class Of Stock [Line Items]
Number of shares purchased in market transaction		78,900	75,000
Value of shares purchased in market transaction		$ 1.7	$ 1.3
CompX \| Common Class A \| Affiliates
Class Of Stock [Line Items]
Number of shares purchased in market transaction		8,900
CompX \| Common Class A \| Open Market Transaction
Class Of Stock [Line Items]
Number of shares purchased in market transaction		70,000
CompX \| Maximum
Class Of Stock [Line Items]
Aggregate of common stock awarded to directors	200,000		200,000
Kronos
Class Of Stock [Line Items]
Shares available for award	97,100
Kronos \| Maximum
Class Of Stock [Line Items]
Aggregate of common stock awarded to directors	200,000

Related party transactions - Cu

Related party transactions - Current Receivables and Payables to Affiliates (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction
Receivables from affiliates	$ 628	$ 636
Payables to affiliates	634	665
Related Party \| Income Taxes \| Valhi
Related Party Transaction
Receivables from affiliates	27	636
Related Party \| Other - Trade Items
Related Party Transaction
Payables to affiliates	634	$ 665
Related Party \| Other Receivables \| Affiliated Entity
Related Party Transaction
Receivables from affiliates	$ 601

Related party transactions - Ad

Related party transactions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Nov. 30, 2016
Related Party Transaction
Note receivable from affiliate	$ 10,600	$ 13,200
Contran \| Kronos
Related Party Transaction
Rent and related ancillary service	600	500	$ 400
Related Party \| Contran \| Unsecured term loan \| Kronos
Related Party Transaction
Unsecured term loan	53,700
Related Party \| Tall Pines
Related Party Transaction
Expense transaction with affiliate	20,700	18,200	19,500
Related Party \| Intercorporate Services Agreement Fees \| Contran
Related Party Transaction
Expense transaction with affiliate	30,800	33,500	33,200
Related Party \| Insurance Premiums \| Tall Pines and EWI
Related Party Transaction
Expense transaction with affiliate	28,400	24,300	26,300
Related Party \| Combined Information Technology Data Recovery Program \| Contran \| Kronos
Related Party Transaction
Expense transaction with affiliate	400	300	300
NLKW Holding, LLC \| Valhi \| Valhi Credit Facility
Related Party Transaction
Borrowing under credit facility				$ 50,000
Outstanding borrowings	500	500
CompX \| Valhi Inc \| Unsecured Revolving Promissory Note Receivable
Related Party Transaction
Maximum loan amount	$ 25,000
Interest rate on loans repayment	1%
Note receivable from affiliate	$ 10,600
CompX \| Related Party \| Unsecured Revolving Promissory Note Receivable \| Valhi
Related Party Transaction
Note receivable from affiliate		13,200
Interest income including unused commitment fees	$ 1,200	$ 1,000	$ 1,200

Commitments and contingencies -

Commitments and contingencies - Changes in Accrued Environmental Remediation and Related Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Commitments and contingencies.
Balance at the beginning of the period	$ 92,358	$ 92,940	$ 93,416
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Current liability, Noncurrent liability	Current liability, Noncurrent liability	Current liability, Noncurrent liability
Additions charged to expense, net	$ 558	$ 486	$ 788
Payments, net	(1,810)	(1,068)	(1,264)
Balance at the end of the period	91,106	92,358	92,940
Amounts recognized in the balance sheet:
Current liability	1,655	2,627	2,643
Noncurrent liability	$ 89,451	$ 89,731	$ 90,297

Commitments and contingencies_2

Commitments and contingencies - Additional Information (Detail) $ in Thousands		1 Months Ended					12 Months Ended
	Jul. 24, 2019 USD ($) defendant installment	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2023 USD ($) site case	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Commitments and Contingent Liabilities [Line Items]
Recognized accretion expense							$ 695	$ 908	$ 1,116
Accrual for reasonably estimable environmental remediation and related matters							$ 91,106	$ 92,358	$ 92,940	$ 93,416
Component Products \| Customer Concentration Risk \| Top Ten Customers \| Sales Revenue
Commitments and Contingent Liabilities [Line Items]
Concentration risk percentage							52%	52%	51%
Component Products \| Customer Concentration Risk \| Customer Two \| Sales Revenue \| CompX Security Products Business
Commitments and Contingent Liabilities [Line Items]
Concentration risk percentage							24%	14%	16%
Component Products \| Customer Concentration Risk \| Customer Two \| Sales Revenue \| CompX Security Products Business \| Pilot project
Commitments and Contingent Liabilities [Line Items]
Concentration risk percentage							11%
Component Products \| Customer Concentration Risk \| One customer \| Sales Revenue \| CompX Security Products Business
Commitments and Contingent Liabilities [Line Items]
Concentration risk percentage								12%
Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments and Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters							$ 91,000
Number of sites associated with remediation and related costs \| site							33
Number of sites currently not able to reasonably estimate a range of costs \| site							5
Maximum \| Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments and Contingent Liabilities [Line Items]
Upper end range, estimate costs for remediation and related matters							$ 118,000
Environmental Remediation Litigation
Commitments and Contingent Liabilities [Line Items]
Recoveries receivable							$ 0	$ 0
Lead Pigment Litigation
Commitments and Contingent Liabilities [Line Items]
Period by which loss contingency claims settled and dismissed							30 years
Description of defendants							on July 24, 2019, an order approving a global settlement agreement entered into among all of the plaintiffs and the three defendants remaining in the case (the Sherwin Williams Company, ConAgra Grocery Products and us) was entered by the court and the case was dismissed with prejudice. The global settlement agreement provides that an aggregate $305 million will be paid collectively by the three co-defendants in full satisfaction of all claims resulting in a dismissal of the case with prejudice and the resolution of (i) all pending and future claims by the plaintiffs in the case, and (ii) all potential claims for contribution or indemnity between us and our co-defendants in respect to the case
Number of defendants \| defendant	3
Litigation settlement amount	$ 305,000
NL's portion of global settlement amount, gross value	101,700
Litigation initial payment made 60 days after litigation settlement	25,000
Remaining litigation settlement charge	$ 76,700
Recognized accretion expense							$ 700	$ 900	$ 1,100
Number of annual installments \| installment	6
Remaining litigation settlement payment due in first year	$ 12,000
Remaining litigation settlement payment due in second year	12,000
Remaining litigation settlement payment due in third year	12,000
Remaining litigation settlement payment due in forth year	12,000
Remaining litigation settlement payment due in fifth year	12,000
Remaining litigation settlement payment due in sixth year	16,700
Escrow deposit	$ 9,000
Litigation initial payment		$ 12,000	$ 12,000	$ 12,000	$ 12,000	$ 25,000
Discounted rate for estimated present value of remaining litigation amount										1.90%
Litigation settlement estimated net present value										$ 96,300
Insurance recoveries							$ 500
Lead Pigment Litigation \| Minimum
Commitments and Contingent Liabilities [Line Items]
Number of cases settled and dismissed and found not liable \| case							100

Financial instruments - Summary

Financial instruments - Summary of Financial Instruments Not Carried at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Carrying amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash, Carrying amount	$ 141,382	$ 97,502
Fair value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash, Fair value	$ 141,382	$ 97,502

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pay vs Performance Disclosure
Net Income (Loss)	$ (2,308)	$ 33,844	$ 51,188

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
Insider Trading Arrangements	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false