MSA Safety (MSA) 10-Q25 Jul 242024 Q2 Quarterly reportFinancial data

Company Profile

Cover

Cover - shares	6 Months Ended
Cover - shares	Jun. 30, 2024	Jul. 19, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	1-15579
Entity Registrant Name	MSA SAFETY INC
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	46-4914539
Entity Address, Address Line One	1000 Cranberry Woods Drive
Entity Address, City or Town	Cranberry Township,
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	16066-5207
City Area Code	724
Local Phone Number	776-8600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	MSA
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding (in shares)		39,352,993
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000066570
Current Fiscal Year End Date	--12-31

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net sales	$ 462,463	$ 447,299	$ 875,765	$ 845,561
Cost of products sold	239,434	233,503	457,205	450,367
Gross profit	223,029	213,796	418,560	395,194
Selling, general and administrative	105,075	96,336	199,226	187,427
Research and development	17,070	15,992	32,988	31,224
Restructuring charges (Note 3)	1,543	3,350	4,560	5,097
Currency exchange (gains) losses, net	(603)	3,110	1,730	7,285
Loss on divestiture of MSA LLC (Note 17)	0	0	0	129,211
Product liability expense (Note 17)	0	0	0	3
Operating income	99,944	95,008	180,056	34,947
Interest expense	9,664	13,175	20,403	24,651
Other income, net	(4,148)	(5,650)	(10,382)	(9,450)
Total other expense, net	5,516	7,525	10,021	15,201
Income before income taxes	94,428	87,483	170,035	19,746
Provision for income taxes (Note 10)	22,194	20,393	39,662	102,829
Net income (loss)	$ 72,234	$ 67,090	$ 130,373	$ (83,083)
Earnings (loss) per share attributable to common shareholders (Note 9):
Basic (in dollars per share)	$ 1.83	$ 1.71	$ 3.31	$ (2.12)
Diluted (in dollars per share)	1.83	1.70	3.30	(2.12)
Dividends per common share (in dollars per share)	$ 0.51	$ 0.47	$ 0.98	$ 0.93

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 72,234	$ 67,090	$ 130,373	$ (83,083)
Other comprehensive (loss) gain, net of tax:
Foreign currency translation adjustments (Note 6)	(8,822)	5,039	(19,495)	16,233
Pension and post-retirement plan adjustments, net of tax (Note 6)	2,022	115	2,396	554
Unrealized gain on available-for-sale securities (Note 6)	0	0	0	2
Reclassification of currency translation from accumulated other comprehensive loss into net income (Note 6)	(1,200)	0	(1,200)	0
Total other comprehensive (loss) gain, net of tax	(8,000)	5,154	(18,299)	16,789
Comprehensive income (loss)	$ 64,234	$ 72,244	$ 112,074	$ (66,294)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 146,830	$ 146,442
Trade receivables, less allowance for credit loss of $7,692 and $7,065	299,053	294,678
Inventories (Note 4)	320,899	292,604
Prepaid income taxes	39,772	12,912
Prepaid expenses and other current assets	54,891	39,634
Total current assets	861,445	786,270
Property, plant and equipment, net (Note 5)	213,159	211,877
Operating lease right-of-use assets, net	56,058	53,298
Prepaid pension cost (Note 14)	180,182	172,161
Deferred tax assets (Note 10)	33,712	33,065
Goodwill (Note 13)	624,637	627,534
Intangible assets, net (Note 13)	256,328	266,134
Other noncurrent assets	18,050	19,811
Total assets	2,243,571	2,170,150
Liabilities
Notes payable and current portion of long-term debt (Note 12)	26,472	26,522
Accounts payable	131,774	111,872
Employees’ compensation	42,377	73,386
Income taxes payable (Note 10)	41,105	19,972
Other current liabilities	110,023	101,066
Total current liabilities	351,751	332,818
Long-term debt, net (Note 12)	561,771	575,170
Pensions and other employee benefits (Note 14)	141,262	143,967
Noncurrent operating lease liabilities	46,418	44,495
Deferred tax liabilities (Note 10)	102,334	102,419
Other noncurrent liabilities	6,388	4,479
Total liabilities	1,209,924	1,203,348
Equity
Preferred stock, 4.5% cumulative, $50 par value (Note 7)	3,569	3,569
Common stock, no par value (Note 7)	320,556	312,324
Treasury shares, at cost (Note 7)	(378,156)	(363,284)
Accumulated other comprehensive loss (Note 6)	(147,548)	(129,249)
Retained earnings	1,235,226	1,143,442
Total shareholders’ equity	1,033,647	966,802
Total liabilities and shareholders’ equity	$ 2,243,571	$ 2,170,150

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Trade receivables, allowance for credit loss	$ 7,692	$ 7,065
Cumulative preferred stock (percent)	4.50%	4.50%
Preferred stock, par value (dollars per share)	$ 50,000	$ 50,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net income (loss)	$ 130,373	$ (83,083)
Depreciation and amortization	31,605	29,461
Tax-effected loss on divestiture of MSA LLC (Note 17)	0	199,578
Stock-based compensation (Note 11)	9,229	13,029
Pension income (Note 14)	(3,108)	(4,040)
Deferred income tax benefit (Note 10)	(2,226)	(393)
Loss (gain) on asset dispositions, net	752	(713)
Pension contributions (Note 14)	(2,632)	(4,092)
Currency exchange losses, net	1,730	7,285
Product liability expense (Note 17)	0	3
Product liability payments (Note 17)	0	(5,250)
Contribution on divestiture of MSA LLC (Note 17)	0	(341,186)
Changes in:
Trade receivables	(15,798)	(10,410)
Inventories (Note 4)	(32,798)	5,896
Accounts payable	20,980	(6,756)
Other current assets and liabilities	(35,109)	5,943
Other noncurrent assets and liabilities	1,190	3,887
Cash Flow From (Used in) Operating Activities	104,188	(190,841)
Investing Activities
Capital expenditures	(25,560)	(18,322)
Property disposals and other investing	74	2,674
Cash Flow Used in Investing Activities	(25,486)	(15,648)
Financing Activities
Proceeds from long-term debt (Note 12)	598,000	1,108,000
Payments on long-term debt (Note 12)	(611,260)	(871,102)
Debt issuance costs	0	(963)
Cash dividends paid	(38,589)	(36,514)
Company stock purchases (Note 7)	(16,829)	(3,871)
Exercise of stock options (Note 7)	326	542
Employee stock purchase plan (Note 7)	634	497
Cash Flow (Used in) From Financing Activities	(67,718)	196,589
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(10,557)	(5,651)
Increase (decrease) in cash, cash equivalents and restricted cash	427	(15,551)
Beginning cash, cash equivalents and restricted cash	148,408	164,428
Ending cash, cash equivalents and restricted cash	148,835	148,877
Supplemental cash flow information:
Cash and cash equivalents	146,830	146,897
Restricted cash included in prepaid expenses and other current assets	2,005	1,980
Total cash, cash equivalents and restricted cash	$ 148,835	$ 148,877

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Retained Earnings, Accumulated Other Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 72,234	$ 67,090	$ 130,373	$ (83,083)
Pension and post-retirement plan adjustments, net of tax	2,022	115	2,396	554
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	(1,200)	0	(1,200)	0
Preferred dividends	(10)	(10)	(20)	(20)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,183,091	990,129	1,143,442	1,158,347
Net loss	72,234	67,090	130,373	(83,083)
Common dividends	(20,089)	(18,459)	(38,569)	(36,494)
Preferred dividends	(10)	(10)	(20)	(20)
Ending balance	1,235,226	1,038,750	1,235,226	1,038,750
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(139,548)	(147,082)	(129,249)	(158,717)
Foreign currency translation adjustments	(8,822)	5,039	(19,495)	16,233
Pension and post-retirement plan adjustments, net of tax	2,022	115	2,396	554
Unrealized net gains (losses) on available-for-sale securities				2
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	(1,200)		(1,200)
Ending balance	$ (147,548)	$ (141,928)	$ (147,548)	$ (141,928)

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Retained Earnings, Accumulated Other Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Stockholders' Equity [Abstract]
Tax reclassification adjustment	$ 240	$ 46	$ 254	$ 232
Common stock, dividends (in dollars per share)	$ 0.51	$ 0.47	$ 0.98	$ 0.93
Preferred stock, dividends (in dollars per share)	$ 0.5625	$ 0.5625	$ 1.125	$ 1.125

Basis of Presentation

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of PresentationThe condensed consolidated financial statements of MSA Safety Incorporated and its subsidiaries ("MSA" or "the Company") are unaudited. These unaudited condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, considered necessary by management to fairly state the Company's results. Intercompany accounts and transactions have been eliminated. The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. The December 31, 2023, Balance Sheet data was derived from the audited Consolidated Balance Sheets, but does not include all disclosures required by accounting principles generally accepted in the United States of America ("U.S. GAAP"). This Form 10-Q report should be read in conjunction with MSA's Form 10-K for the year ended December 31, 2023, which includes all disclosures required by U.S. GAAP.

Cash and Cash Equivalents

Cash and Cash Equivalents	6 Months Ended
Cash and Cash Equivalents	Jun. 30, 2024
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents Several of the Company's subsidiaries participate in a notional cash pooling arrangement to manage global liquidity requirements. As part of a master netting arrangement, the participants combine their cash balances in pooling accounts at the same financial institution with the ability to offset bank overdrafts of one participant against positive cash account balances held by another participant. Under the terms of the master netting arrangement, the financial institution has the right, ability and intent to offset a positive balance in one account against an overdrawn amount in another account. Amounts in each of the accounts are unencumbered and unrestricted with respect to use. As such, the net cash balance related to this pooling arrangement is included in Cash and cash equivalents in the unaudited Condensed Consolidated Balance Sheets. The Company's net cash pool position consisted of the following: (In thousands) June 30, 2024 Gross cash pool position $ 96,109 Less: cash pool borrowings (91,690) Net cash pool position $ 4,419

Restructuring Charges

Restructuring Charges	6 Months Ended
Restructuring Charges	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges During the three and six months ended June 30, 2024, we recorded restructuring charges of $1.5 million and $4.6 million, respectively. Americas segment restructuring charges of $0.8 million during the six months ended June 30, 2024, were related to manufacturing footprint optimization activities. International segment restructuring charges of $2.9 million during the six months ended June 30, 2024, were related to ongoing initiatives to optimize our manufacturing footprint and improve productivity as well as management restructuring. Corporate segment restructuring charges of $0.9 million during the six months ended June 30, 2024, were related to management restructuring. During the three and six months ended June 30, 2023, we recorded restructuring charges of $3.4 million and $5.1 million, respectively. Americas segment restructuring charges of $2.2 million during the six months ended June 30, 2023, were related to manufacturing footprint optimization activities. International segment restructuring charges of $1.5 million during the six months ended June 30, 2023, were related to ongoing initiatives to drive profitable growth and rightsize our operations including the expansion of our European Shared Service Center in Warsaw, Poland. Restructuring reserves are included in Other current liabilities in the accompanying unaudited Condensed Consolidated Balance Sheets. Activity and reserve balances for restructuring by segment were as follows: (In millions) Americas International Corporate Total Reserve balances at December 31, 2022 $ 1.7 $ 12.8 $ 0.5 $ 15.0 Restructuring charges 3.1 4.7 2.1 9.9 Currency translation (0.1) 0.1 — — Cash payments / utilization (3.9) (8.6) (2.6) (15.1) Reserve balances at December 31, 2023 $ 0.8 $ 9.0 $ — $ 9.8 Restructuring charges 0.8 2.9 0.9 4.6 Currency translation (0.1) (0.2) — (0.3) Cash payments (1.2) (5.5) (0.9) (7.6) Reserve balances at June 30, 2024 $ 0.3 $ 6.2 $ — $ 6.5

Inventories

Inventories	6 Months Ended
Inventories	Jun. 30, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories The following table sets forth the components of inventory: (In thousands) June 30, 2024 December 31, 2023 Finished products $ 104,057 $ 88,687 Work in process 18,704 15,378 Raw materials and supplies 198,138 188,539 Total inventories $ 320,899 $ 292,604

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
Property, Plant and Equipment	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment The following table sets forth the components of property, plant and equipment, net: (In thousands) June 30, 2024 December 31, 2023 Land $ 4,292 $ 4,332 Buildings 142,335 141,027 Machinery and equipment 496,349 498,148 Construction in progress 26,334 24,404 Total 669,310 667,911 Less: accumulated depreciation (456,151) (456,034) Property, plant and equipment, net $ 213,159 $ 211,877

Reclassifications Out of Accumu

Reclassifications Out of Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Reclassifications Out of Accumulated Other Comprehensive Loss	Reclassifications Out of Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss were as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Pension and other post-retirement benefits (a) Balance at beginning of period $ (42,278) $ (49,896) $ (42,652) $ (50,335) Amounts reclassified from accumulated other comprehensive loss into net income (loss): Amortization of prior service credit (Note 14) (9) (24) (18) (48) Recognized net actuarial losses (Note 14) 2,271 185 2,668 370 Tax (benefit) expense (240) (46) (254) 232 Total amount reclassified from accumulated other comprehensive loss, net of tax, into net income (loss) 2,022 115 2,396 554 Balance at end of period $ (40,256) $ (49,781) $ (40,256) $ (49,781) Available-for-sale securities Balance at beginning of period $ — $ — $ — $ (2) Unrealized net gains on available-for-sale securities (Note 16) — — — 2 Balance at end of period $ — $ — $ — $ — Foreign currency translation Balance at beginning of period $ (97,270) $ (97,186) $ (86,597) $ (108,380) Reclassification from accumulated other comprehensive loss into net income (loss) (b) (1,200) — (1,200) — Foreign currency translation adjustments (8,822) 5,039 (19,495) 16,233 Balance at end of period $ (107,292) $ (92,147) $ (107,292) $ (92,147) (a) Amounts reclassified from accumulated other comprehensive loss into net income (loss) are included in the computation of net periodic pension and other post-retirement benefit costs (refer to Note 14—Pensions and Other Post-retirement Benefits). (b) Reclassification from accumulated other comprehensive loss into net income (loss) relates primarily to the recognition of non-cash net cumulative translation gains associated with certain foreign subsidiaries. The reclassifications are included in Currency exchange (gains) losses, net, within the unaudited Condensed Consolidated Statements of Income.

Capital Stock

Capital Stock	6 Months Ended
Capital Stock	Jun. 30, 2024
Equity [Abstract]
Capital Stock	Capital Stock Preferred Stock - The Company has authorized 100,000 shares of $50 par value 4.5% cumulative preferred nonvoting stock which is callable at $52.50. There were 71,340 shares issued and 52,998 shares held in treasury at both June 30, 2024 and December 31, 2023. The Treasury shares at cost line in the unaudited Condensed Consolidated Balance Sheets includes $1.8 million related to preferred stock. There were no shares of preferred stock purchased and subsequently held in treasury during the six months ended June 30, 2024 or 2023. The Company has also authorized 1,000,000 shares of $10 par value second cumulative preferred voting stock. No shares have been issued as of June 30, 2024, or December 31, 2023. Common Stock - The Company has authorized 180,000,000 shares of no par value common stock. There were 62,081,391 shares issued as of June 30, 2024 and December 31, 2023. No new shares were issued during the six months ended June 30, 2024 or 2023. There were 39,349,528 and 39,317,212 shares outstanding at June 30, 2024 and December 31, 2023, respectively. Treasury Shares - The Company has a stock repurchase program that authorizes up to $200.0 million to repurchase MSA common stock in the open market and in private transactions. The stock repurchase program has no expiration date. The maximum number of shares that may be repurchased is calculated based on the dollars remaining under the program and the respective month-end closing share price. During the six months ended June 30, 2024, and 2023, the Company repurchased 52,561 and no shares, respectively, under this program. There were 22,731,863 and 22,764,179 treasury shares at June 30, 2024 and December 31, 2023, respectively. The Company issues treasury shares for all stock-based benefit plans. Shares are issued from treasury at the average treasury share cost on the date of the transaction. There were 121,790 and 105,894 Treasury shares issued for these purposes during the six months ended June 30, 2024 and 2023, respectively. Common stock activity is summarized as follows: Three Months Ended June 30, 2024 Three Months Ended June 30, 2023 (In thousands) Common Treasury Cost (a) Common Treasury Cost (a) Balance at beginning of period $ 315,241 $ (365,999) $ 287,009 $ (362,280) Stock compensation expense 5,042 — 6,759 — Restricted and performance stock awards (348) 348 (190) 190 Stock options exercised 47 27 354 184 Treasury shares purchased for stock compensation programs — (992) — (184) Employee stock purchase program 574 60 432 65 Share repurchase program — (10,000) — — Balance at end of period $ 320,556 $ (376,556) $ 294,364 $ (362,025) (a) Excludes treasury cost related to preferred stock. Six Months Ended June 30, 2024 Six Months Ended June 30, 2023 (In thousands) Common Treasury Cost (a) Common Treasury Cost (a) Balance at beginning of period $ 312,324 $ (361,684) $ 281,980 $ (359,838) Stock compensation expense 9,229 — 13,029 — Restricted and performance stock awards (1,783) 1,783 (1,434) 1,434 Stock options exercised 212 114 357 185 Treasury shares purchased for stock compensation programs — (6,829) — (3,871) Employee stock purchase program 574 60 432 65 Share repurchase program — (10,000) — — Balance at end of period $ 320,556 $ (376,556) $ 294,364 $ (362,025) (a) Excludes treasury cost related to preferred stock.

Segment Information

Segment Information	6 Months Ended
Segment Information	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information The Company is organized into four geographical operating segments that are based on management responsibilities: Northern North America; Latin America; Europe, Middle East & Africa; and Asia Pacific. The operating segments have been aggregated (based on economic similarities, the nature of their products, end-user markets and methods of distribution) into three reportable segments: Americas, International, and Corporate. The Americas segment is comprised of our operations in Northern North American and Latin American geographies. The International segment is comprised of our operations in all geographies outside of the Americas. Certain global expenses are allocated to each segment in a manner consistent with where the benefits from the expenses are derived. The Company's sales are allocated to each segment based primarily on the country destination of the end-customer. Adjusted operating income (loss), adjusted operating margin, adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) and adjusted EBITDA margin are the measures used by the chief operating decision maker to evaluate segment performance and allocate resources. Adjusted operating income (loss) is defined as operating income (loss) excluding restructuring charges, currency exchange (gains) losses, product liability expense, loss on divestiture of Mine Safety Appliances Company, LLC ("MSA LLC"), net cost for product related legal matter, transaction costs and acquisition-related amortization. Adjusted operating margin is defined as adjusted operating income (loss) divided by segment net sales to external customers. Adjusted EBITDA is defined as adjusted operating income (loss) plus depreciation and amortization. Adjusted EBITDA margin is defined as adjusted EBITDA divided by segment net sales to external customers. The accounting principles applied at the operating segment level in determining operating income (loss) are generally the same as those applied at the unaudited condensed consolidated financial statement level. Sales and transfers between operating segments are accounted for at market-based transaction prices and are eliminated in consolidation. Reportable segment information is presented in the following table: (In thousands, except percentages) Americas International Corporate Consolidated Three Months Ended June 30, 2024 Net sales to external customers $ 314,711 $ 147,752 $ — $ 462,463 Operating income 99,944 Restructuring charges (Note 3) 1,543 Currency exchange gains, net (603) Net cost for product related legal matter 5,000 Amortization of acquisition-related intangible assets 2,306 Adjusted operating income (loss) 98,468 24,285 (14,563) 108,190 Adjusted operating margin % 31.3 % 16.4 % Depreciation and amortization 13,741 Adjusted EBITDA 108,230 28,052 (14,351) 121,931 Adjusted EBITDA margin % 34.4 % 19.0 % Three Months Ended June 30, 2023 Net sales to external customers $ 308,378 $ 138,921 $ — $ 447,299 Operating income 95,008 Restructuring charges (Note 3) 3,350 Currency exchange losses, net 3,110 Amortization of acquisition-related intangible assets 2,315 Adjusted operating income (loss) 94,816 21,743 (12,776) 103,783 Adjusted operating margin % 30.7 % 15.7 % Depreciation and amortization 12,574 Adjusted EBITDA 103,977 24,949 (12,569) 116,357 Adjusted EBITDA margin % 33.7 % 18.0 % (In thousands, except percentages) Americas International Corporate Consolidated Six Months Ended June 30, 2024 Net sales to external customers $ 610,249 $ 265,516 $ — $ 875,765 Operating income 180,056 Restructuring charges (Note 3) 4,560 Currency exchange losses, net 1,730 Net cost for product related legal matter 5,000 Amortization of acquisition-related intangible assets 4,620 Transaction costs (a) 234 Adjusted operating income (loss) 184,688 37,770 (26,258) 196,200 Adjusted operating margin % 30.3 % 14.2 % Depreciation and amortization 26,985 Adjusted EBITDA 203,923 45,097 (25,835) 223,185 Adjusted EBITDA margin % 33.4 % 17.0 % Six Months Ended June 30, 2023 Net sales to external customers $ 588,645 $ 256,916 $ — $ 845,561 Operating income 34,947 Restructuring charges (Note 3) 5,097 Currency exchange losses, net 7,285 Loss on divestiture of MSA LLC (Note 17) 129,211 Product liability expense (Note 17) 3 Amortization of acquisition-related intangible assets 4,620 Adjusted operating income (loss) 166,510 37,522 (22,869) 181,163 Adjusted operating margin % 28.3 % 14.6 % Depreciation and amortization 24,841 Adjusted EBITDA 184,471 44,007 (22,474) 206,004 Adjusted EBITDA margin % 31.3 % 17.1 % (a) Transaction costs include advisory, legal, accounting, valuation, and other professional or consulting fees incurred during acquisitions and divestitures. These costs are included in Selling, general and administrative expense in the unaudited Condensed Consolidated Statements of Operations. Total sales by product group was as follows: Three Months Ended June 30, 2024 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 172,269 37% $ 118,487 38% $ 53,782 37% Detection (b) 170,848 37% 111,405 35% 59,443 40% Industrial PPE and Other (c) 119,346 26% 84,819 27% 34,527 23% Total $ 462,463 100% $ 314,711 100% $ 147,752 100% Three Months Ended June 30, 2023 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 166,490 37% $ 121,157 39% $ 45,333 33% Detection (b) 158,242 35% 104,374 34% 53,868 39% Industrial PPE and Other (c) 122,567 28% 82,847 27% 39,720 28% Total $ 447,299 100% $ 308,378 100% $ 138,921 100% Six Months Ended June 30, 2024 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 335,962 39% $ 240,738 39% $ 95,224 36% Detection (b) 310,064 35% 207,700 34% 102,364 38% Industrial PPE and Other (c) 229,739 26% 161,811 27% 67,928 26% Total $ 875,765 100% $ 610,249 100% $ 265,516 100% Six Months Ended June 30, 2023 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 305,878 36% $ 223,213 38% $ 82,665 32% Detection (b) 304,843 36% 203,685 35% 101,158 39% Industrial PPE and Other (c) 234,840 28% 161,747 27% 73,093 29% Total $ 845,561 100% $ 588,645 100% $ 256,916 100% (a) Fire Service includes Breathing Apparatus and Firefighter Helmets and Protective Apparel. (b) Detection includes Fixed Gas and Flame Detection and Portable Gas detection. (c) Industrial PPE and Other includes Industrial Head Protection, Fall Protection and Non-Core.

Earnings (Loss) per Share

Earnings (Loss) per Share	6 Months Ended
Earnings (Loss) per Share	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings (Loss) per Share	Earnings (Loss) per Share Basic earnings (loss) per share is computed by dividing net income, after the deduction of preferred stock dividends and undistributed earnings allocated to participating securities, by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share assumes the issuance of common stock for all potentially dilutive share equivalents outstanding not classified as participating securities. Participating securities are defined as unvested stock-based compensation awards that contain nonforfeitable rights to dividends. Three Months Ended June 30, Six Months Ended June 30, (In thousands, except per share values) 2024 2023 2024 2023 Net income (loss) $ 72,234 $ 67,090 $ 130,373 $ (83,083) Preferred stock dividends (10) (10) (20) (20) Net income (loss) attributable to common equity 72,224 67,080 130,353 (83,103) Dividends and undistributed earnings allocated to participating securities (6) (8) (13) (8) Net income (loss) attributable to common shareholders 72,218 67,072 130,340 (83,111) Basic weighted-average shares outstanding 39,389 39,274 39,375 39,249 Stock-based compensation awards (a) 152 135 174 — Diluted weighted-average shares outstanding 39,541 39,409 39,549 39,249 Antidilutive shares — — — 158 Earnings (loss) per share: Basic $ 1.83 $ 1.71 $ 3.31 $ (2.12) Diluted $ 1.83 $ 1.70 $ 3.30 $ (2.12) (a) During periods in which the Company incurs a net loss, stock-based compensation awards are excluded from the computation of diluted earnings per share because their effect would be anti-dilutive. As such, during periods in which the Company incurs a net loss, diluted weighted-average shares outstanding are equivalent to basic weighted-average shares outstanding.

Income Taxes

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's effective tax rate for the three months ended June 30, 2024, was 23.5%, which differs from the United States of America ("U.S.") federal statutory rate of 21% primarily due to state income taxes. The Company's effective tax rate for the three months ended June 30, 2023, was 23.3%, which differs from the U.S. federal statutory rate of 21% primarily due to state income taxes. The Company's effective tax rate for the six months ended June 30, 2024, was 23.3%, which differs from the United States of America ("U.S.") federal statutory rate of 21% primarily due to state income taxes and nondeductible compensation. The Company's effective tax rate for the six months ended June 30, 2023, was 520.8%, which differs from the U.S. federal statutory rate of 21% primarily due to the divestiture of MSA LLC and the non-deductible loss recorded on the derecognition of the product liability reserves and related assets. Refer to Note 17—Commitments and Contingencies to the unaudited condensed consolidated financial statements in Part I Item 1 of this Form 10-Q for further information on this transaction. At June 30, 2024, the Company had a gross liability for unrecognized tax benefits of $7.3 million. The Company has recognized tax benefits associated with these liabilities of $0.6 million at June 30, 2024. The gross liability includes amounts associated with foreign tax exposure in prior periods. The Company recognizes interest and penalties related to unrecognized tax benefits in interest expense and operating expenses, respectively. The Company's liability for accrued interest related to uncertain tax positions was $0.2 million at June 30, 2024. We are subject to regular review and audit by both foreign and domestic tax authorities. While we believe our tax positions will be sustained, the final outcome of tax audits and related litigation may differ materially from the tax amounts recorded in our unaudited condensed consolidated financial statements.

Stock Plans

Stock Plans	6 Months Ended
Stock Plans	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock Plans	Stock Plans The 2023 Management Equity Incentive Plan provides for various forms of stock-based compensation for eligible employees through May 2033 including stock options, restricted stock awards, restricted stock units and performance stock units. The 2017 Non-Employee Directors’ Equity Incentive Plan provides for grants of stock options, restricted stock awards and restricted stock units to non-employee directors through May 2027. Stock compensation expense, included in Selling, general and administrative expense in the unaudited Condensed Consolidated Statements of Operations, is as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Stock compensation expense $ 5,042 $ 6,759 $ 9,229 $ 13,029 Income tax benefit 1,235 1,656 2,261 3,192 Stock compensation expense, net of tax $ 3,807 $ 5,103 $ 6,968 $ 9,837 We have not capitalized any stock-based compensation expense. A summary of stock option activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Outstanding at January 1, 2024 26,536 $ 45.95 Exercised (7,070) 46.13 Forfeited (852) 48.65 Outstanding and exercisable at June 30, 2024 18,614 $ 45.76 Restricted stock awards and restricted stock units are valued at the market value of the stock on the grant date. A summary of restricted stock activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Unvested at January 1, 2024 173,851 $ 142.73 Granted 81,658 178.52 Vested (43,946) 165.12 Forfeited (21,904) 166.54 Unvested at June 30, 2024 189,659 $ 150.08 Performance stock units that have a market condition modifier are valued at an estimated fair value using a Monte Carlo model. The final number of shares to be issued for performance stock units granted in the first quarter of 2024 may range from 0% to 200% of the target award based on achieving the specified performance targets over the performance period plus an additional modifier based on total shareholder return ("TSR") over the performance period. The following weighted average assumptions were used in estimating the fair value of the performance stock units granted in the first quarter of 2024. Fair value per unit $181.31 Risk-free interest rate 4.34% Expected dividend yield 1.19% Expected volatility 25.9% MSA stock beta 0.728 The risk-free interest rate is based on the U.S. Treasury Constant Maturity rates as of the grant date converted into an implied spot rate yield curve. Expected dividend yield is based on the most recent annualized dividend divided by the one year average closing share price. Expected volatility is based on the three year historical volatility preceding the grant date using daily stock prices. Expected life is based on historical stock option exercise data. A summary of performance stock unit activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Unvested at January 1, 2024 189,221 $ 146.17 Granted 40,231 177.30 Performance adjustments (a) 21,143 193.10 Vested (78,199) 174.03 Forfeited (5,895) 158.69 Unvested at June 30, 2024 166,501 $ 146.13 (a) Performance adjustments relate primarily to the final number of shares issued for the 2021 performance unit awards which vested in the first quarter of 2024 at 174% of the target award based on both cumulative performance against EBITDA margin and revenue growth targets and MSA's TSR during the three

Long-Term Debt

Long-Term Debt	6 Months Ended
Long-Term Debt	Jun. 30, 2024
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt (In thousands) June 30, 2024 December 31, 2023 2016 Senior Notes payable through 2031, 3.40%, net of debt issuance costs $ 53,966 $ 62,081 2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs 99,743 99,733 2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs 99,743 99,733 2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs 218,238 230,604 2023 Senior Notes payable through 2028, 5.25%, net of debt issuance costs 49,946 49,939 Senior revolving credit facility maturing in 2026, net of debt issuance costs 66,607 59,602 Total 588,243 601,692 Amounts due within one year 26,472 26,522 Long-term debt, net of debt issuance costs $ 561,771 $ 575,170 On May 24, 2021, the Company entered into a Fourth Amended and Restated Credit Agreement (the “Revolving Credit Facility" or "Facility”) that extended its term through May 24, 2026 and increased the capacity to $900.0 million. The agreement was amended in August 2021 and June 2023 to transition from Sterling LIBOR reference rates and U.S. LIBOR reference rates. Under the amended agreement, the Company may elect either a Base rate of interest (“BASE”) or an interest rate based on Secured Overnight Financing Rate (“SOFR”). The BASE is a daily fluctuating per annum rate equal to the highest of (i) 0.00%, (ii) the Overnight Bank Funding Rate, plus 0.5%, (iii) the Prime Rate (iv) the Daily Simple SOFR rate, plus 1.00%. The Company pays a credit spread of 0 to 175 basis points based on the Company’s net EBITDA leverage ratio and elected rate (BASE or SOFR). The Company has a weighted average revolver interest rate of 6.23% as of June 30, 2024. At June 30, 2024, $831.4 million of the existing $900.0 million Revolving Credit Facility was unused, including letters of credit issued under the Facility. The Facility also provides an accordion feature that allows the Company to access an additional $400.0 million of capacity pending approval by MSA’s board of directors and from the bank group. On July 1, 2024, the Company entered into Amendment No. 3 to the Third Amended and Restated Multi-Currency Note Purchase and Private Shelf Agreement (the “Prudential Note Agreement”) with PGIM, Inc. (“Prudential”). The Prudential Note Agreement provided for (i) the issuance of $100.0 million of 2.69% Series C Senior Notes due July 1, 2036 and (ii) the establishment of an uncommitted note issuance facility whereby the Company may request, subject to Prudential’s acceptance in its sole discretion, the issuance of up to $335.0 million aggregate principal amount of senior unsecured notes. As of June 30, 2024, the Company has outstanding £42.7 million (approximately $54.1 million at June 30, 2024) of 3.4% Series B Senior Notes due January 22, 2031. Remaining maturities of this note are £6.1 million (approximately $7.7 million at June 30, 2024) due annually through January 2031. On July 1, 2024, the Company entered into Amendment No. 3 to the Second Amended and Restated Master Note Facility (the “NYL Note Facility”) with NYL Investors. The NYL Note Facility provided for (i) the issuance of $100.0 million of 2.69% Series A Senior Notes due July 1, 2036, and (ii) the establishment of an uncommitted note issuance facility whereby the Company may request, subject to NYL Investors’ acceptance in its sole discretion, the issuance of up to $200.0 million aggregate principal amount of senior unsecured notes. On June 29, 2023, the Company issued $50 million of 5.25% Series B Senior Notes due July 1, 2028, pursuant to the NYL Note Facility (the "Notes"). The Notes bear interest at 5.25% per annum, payable semi-annually, and mature on July 1, 2028. The Notes provide for a principal payment of $25 million on July 1, 2027, with the remaining $25 million due on July 1, 2028. The Notes may be redeemed at the Company’s option prior to their maturity at a make-whole redemption price calculated as provided in the NYL Note Facility. The proceeds of the Notes were used on June 29, 2023, to pay down an equivalent amount of borrowings under the Company’s Revolving Credit Facility with PNC Bank, National Association, as Administrative Agent. On January 5, 2023, the Company entered into a new $250 million term loan facility to fund the divestiture of MSA LLC, a wholly owned subsidiary. Under the agreement, the Company may elect either BASE or an interest rate based on SOFR. The Company pays a credit spread of 0 to 200 basis points based on the Company's net EBITDA leverage ratio and elected rate. The Company had a Term Loan interest rate of 6.43% as of June 30, 2024. The Revolving Credit Facility, Prudential Note Agreement and NYL Note Facility require the Company to comply with specified financial covenants, including a requirement to maintain a minimum fixed charges coverage ratio of not less than 1.50 to 1.00 and a consolidated leverage ratio not to exceed 3.50 to 1.00; except during an acquisition period, defined as four consecutive fiscal quarters beginning with the quarter of acquisition, in which case the consolidated net leverage ratio shall not exceed 4.00 to 1.00; in each case calculated on the basis of the trailing four fiscal quarters. In addition, the agreements contain negative covenants limiting the ability of the Company and its subsidiaries to incur additional indebtedness or issue guarantees, create or incur liens, make loans and investments, make acquisitions, transfer or sell assets, enter into transactions with affiliated parties, make changes in its organizational documents that are materially adverse to lenders or modify the nature of the Company's or its subsidiaries' business. All credit facilities exclude MSA LLC prior to the divestiture of this subsidiary on January 5, 2023, as discussed further in Note 17—Commitments and Contingencies to the unaudited condensed consolidated financial statements in Part I Item 1 of this Form 10-Q for further information on this transaction. As of June 30, 2024, the Company was in full compliance with the restrictive covenants under its various credit agreements.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	6 Months Ended
Goodwill and Intangible Assets, Net	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	Goodwill and Intangible Assets, Net Changes in goodwill during the six months ended June 30, 2024, were as follows: (In thousands) Goodwill Balance at January 1, 2024 $ 627,534 Currency translation (2,897) Balance at June 30, 2024 $ 624,637 At June 30, 2024, goodwill of $447.6 million and $177.0 million related to the Americas and International reportable segments, respectively. Changes in intangible assets, net, during the six months ended June 30, 2024, were as follows: (In thousands) Intangible Assets Net balance at January 1, 2024 $ 266,134 Amortization expense (8,967) Currency translation (839) Net balance at June 30, 2024 $ 256,328

Pensions and Other Post-retirem

Pensions and Other Post-retirement Benefits	6 Months Ended
Pensions and Other Post-retirement Benefits	Jun. 30, 2024
Retirement Benefits [Abstract]
Pensions and Other Post-retirement Benefits	Pensions and Other Post-retirement Benefits Components of Net periodic benefit (income) cost consisted of the following: Pension Benefits Other Benefits (In thousands) 2024 2023 2024 2023 Three Months Ended June 30, Service cost $ 2,315 $ 1,884 $ 44 $ 53 Interest cost 5,970 5,918 248 273 Expected return on plan assets (10,812) (9,906) — — Amortization of prior service cost (credit) 37 37 (46) (61) Recognized net actuarial losses 282 47 115 138 Settlements 1,308 — — — Net periodic benefit (income) cost (a) $ (900) $ (2,020) $ 361 $ 403 Six Months Ended June 30, Service cost $ 4,630 $ 3,768 $ 88 $ 106 Interest cost 11,940 11,836 496 546 Expected return on plan assets (21,624) (19,812) — — Amortization of prior service cost (credit) 74 74 (92) (122) Recognized net actuarial losses 564 94 230 276 Settlements 1,308 — — — Net periodic benefit (income) cost (a) $ (3,108) $ (4,040) $ 722 $ 806 (a) Components of Net periodic benefit (income) cost other than service cost are included in the line item Other income, net, and service costs are included in the line items Cost of products sold and Selling, general and administrative in the unaudited Condensed Consolidated Statements of Operations.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
Derivative Financial Instruments	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments As part of our currency exchange rate risk management strategy, we enter into certain derivative foreign currency forward contracts that do not meet the U.S. GAAP criteria for hedge accounting but have the impact of partially offsetting certain of our foreign currency exposures. We account for these forward contracts at fair value and report the related gains or losses in currency exchange (gains) losses, net, in the unaudited Condensed Consolidated Statements of Operations. The notional amount of open forward contracts was $113.6 million and $110.9 million at June 30, 2024, and December 31, 2023, respectively. The following table presents the unaudited Condensed Consolidated Balance Sheets location and fair value of assets and liabilities associated with derivative financial instruments: (In thousands) June 30, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts: prepaid expenses and other current assets $ 159 $ 2,210 Foreign exchange contracts: other current liabilities 882 242 The following table presents the unaudited Condensed Consolidated Statements of Operations and unaudited Condensed Consolidated Statements of Cash Flows location and the loss (gain) impact of derivative financial instruments: Six Months Ended June 30, (In thousands) 2024 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts: currency exchange (gains) losses, net $ 3,659 $ 123

Fair Value Measurements

Fair Value Measurements	6 Months Ended
Fair Value Measurements	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are: • Level 1—Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets. • Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. • Level 3—Unobservable inputs for the asset or liability. The valuation methodologies we used to measure financial assets and liabilities are also used to value the derivative financial instruments described in Note 15—Derivative Financial Instruments. We estimate the fair value of the derivative financial instruments, consisting of foreign currency forward contracts, based upon valuation models with inputs that generally can be verified by observable market conditions and do not involve significant management judgment. Accordingly, the fair values of the derivative financial instruments are classified within Level 2 of the fair value hierarchy. With the exception of our fixed rate long-term debt, we believe that the reported carrying amounts of our financial assets and liabilities approximate their fair values. The reported carrying amount of our fixed rate long-term debt was $304.1 million and $312.2 million at June 30, 2024, and December 31, 2023, respectively. The fair value of this debt was $263.9 million and $278.7 million at June 30, 2024, and December 31, 2023, respectively. The fair value of this debt was determined using Level 2 inputs by evaluating similarly rated companies with publicly traded bonds where available or current borrowing rates available for financings with similar terms and maturities.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Product liability The Company and its subsidiaries face an inherent business risk of exposure to legal claims arising from the alleged failure of our products to prevent the types of personal injury or death against which they are designed to protect. Product liability claims are categorized as either single incident or cumulative trauma. Single incident product liability claims. Single incident product liability claims involve incidents of short duration that are typically known when they occur and involve observable injuries, which provide an objective basis for quantifying damages. Management has established reserves for the single incident product liability claims of the Company's various subsidiaries, including asserted single incident product liability claims and incurred but not reported ("IBNR") single incident claims. To determine the reserves, Management makes reasonable estimates of losses for single incident claims based on the number and characteristics of asserted claims, historical experience, sales volumes, expected settlement costs, and other relevant information. The reserve for single incident product liability claims was $1.4 million at June 30, 2024 and $1.3 million at December 31, 2023. Single incident product liability expense was $0.1 million for both the six months ended June 30, 2024, and 2023. Single incident product liability exposures are evaluated on an annual basis, or more frequently if changing circumstances warrant. Adjustments are made to the reserve as appropriate. The reserve has not been discounted to present value and does not include future amounts which will be spent to defend the claims. During the second quarter of 2024, the Company recorded $5.0 million of net cost for product related legal matter. The expense is reflected within the selling, general and administration line of the unaudited Condensed Consolidated Statement of Operations. Cumulative trauma product liability claims. Cumulative trauma product liability claims involve alleged exposures to harmful substances (e.g., silica, asbestos and coal dust) that occurred years ago and may have developed over long periods of time into diseases such as silicosis, asbestosis, mesothelioma, or coal worker’s pneumoconiosis. Prior to the divestiture described below, one of the Company's former subsidiaries, MSA LLC, was named as a defendant in various lawsuits related to such claims. These lawsuits mainly involve respiratory protection products allegedly manufactured and sold by MSA LLC or its predecessors. On January 5, 2023, the Company entered into a membership interest purchase agreement (the “Purchase Agreement”) with Sag Main Holdings, LLC (the “Buyer”). The Buyer was a joint venture between R&Q Insurance Holdings Ltd. (“R&Q”) and Obra Capital, Inc. (“Obra”). Under the Purchase Agreement, on January 5, 2023, the Company transferred to the Buyer all of the issued and outstanding limited liability company interests of MSA LLC (the “Sale”). In connection with the closing, the Company contributed $341.2 million in cash and cash equivalents, while R&Q and Obra contributed an additional $35.0 million. MSA LLC was the obligor for the claims to which the Company's legacy cumulative trauma product liability reserves relate and policyholder of the related insurance assets. The rights and obligations related to these items remained with MSA LLC upon the sale to the Buyer. In addition, pursuant to the Purchase Agreement, the Buyer and MSA LLC have agreed to indemnify the Company and its affiliates for legacy cumulative trauma product liabilities and other product liabilities, and a subsidiary of the Company has agreed to indemnify MSA LLC for all other historical liabilities of MSA LLC. This indemnification is not subject to any cap or time limitation. In connection with the sale, the Company and its Board of Directors received a solvency opinion from an independent advisory firm that MSA LLC was solvent and adequately capitalized after giving effect to the transaction. Following the completion of the transaction, the Company no longer has any obligation with respect to pending and future cumulative trauma product liability claims relating to these matters. As such, all legacy cumulative trauma product liability reserves, related insurance assets, and associated deferred tax assets of the divested subsidiary were derecognized from our balance sheet and the Company incurred a tax-effected loss on the divestiture of MSA LLC of $199.6 million, including transaction related costs of $5.6 million. The Buyer has assumed management of the divested subsidiary, including the management of its claims and associated assets. Other Litigation Globe, a subsidiary of the Company, is defending claims in which plaintiffs assert that certain products allegedly containing per- and polyfluoroalkyl substances (“PFAS”) have caused harm, including injury or health issues. PFAS are a large class of substances that are widely used in everyday products. Specifically, Globe builds firefighter turnout gear from technical fabrics sourced from a small pool of specialty textile manufacturers. These protective fabrics have been tested and certified to meet current National Fire Protection Association safety standards, and some of them as supplied to Globe contain or historically have contained PFAS to achieve performance characteristics such as water, oil, or chemical resistance. Globe believes it has valid defenses to these claims. These matters are at a very early stage with numerous factual and legal issues to be resolved. Defense costs relating to these lawsuits are recognized in the unaudited Condensed Consolidated Statements of Operations as incurred. Globe is also pursuing insurance coverage and indemnification related to the lawsuits. As of July 17, 2024, Globe was named as a defendant in 659 lawsuits comprised of 12,137 claims, predominantly styled as individual personal injury claims and including two putative class actions. Certain of these lawsuits include MSA Safety Inc. or other Globe affiliates as defendants. MSA LLC is also a defendant in a number of PFAS lawsuits predominantly relating to Aqueous Film-Forming Foam. The Buyer assumed responsibility for these and any similar future claims specific to MSA LLC, including such claims that have been or may be brought against MSA Safety Inc. or its subsidiaries, under the terms of the divestiture on January 5, 2023. Further information about the transaction can be found in the Company’s Current Report on Form 8-K filed on January 6, 2023. Product Warranty The Company provides warranties on certain product sales. Product warranty reserves are established in the same period that revenue from the sale of the related products is recognized, or in the period that a specific issue arises as to the functionality of the Company's product. The determination of such reserves requires the Company to make estimates of product return rates and expected costs to repair or to replace the products under warranty. The amounts of the reserves are based on established terms and the Company's best estimate of the amounts necessary to settle future and existing claims on products sold as of the balance sheet date. If actual return rates and/or repair and replacement costs differ significantly from estimates, adjustments to recognize additional cost of sales may be required in future periods. The following table reconciles changes in the Company's accrued warranty reserve: (In thousands) Six Months Ended June 30, 2024 Year Ended Beginning warranty reserve $ 14,288 $ 15,230 Warranty payments (5,387) (9,794) Warranty claims 4,826 8,899 Provision for product warranties and other adjustments 208 (47) Ending warranty reserve $ 13,935 $ 14,288 Warranty expense was $5.0 million and $4.7 million for the six months ended June 30, 2024, and 2023, respectively, and is included in Costs of products sold on the unaudited Condensed Consolidated Statements of Operations. Outstanding Performance Obligations The Company derives a portion of its revenue from various leasing arrangements where the Company is the lessor, primarily fire service contracts entered into by Bristol. Such arrangements provide for monthly payments covering equipment provided, maintenance and interest. These arrangements meet the criteria to be accounted for as sales-type leases under Accounting Standards Codification ("ASC") 842 and contain both lease and non-lease components. Revenue from equipment provided is considered a lease component and recognized with point in time revenue recognition upon lease commencement. Maintenance revenue, which is considered a non-lease component, and interest is recognized monthly over the lease term. As of June 30, 2024, the Company had remaining maintenance performance obligations of approximately $29.5 million which are expected to be recognized to revenue in approximately three years.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net income (loss)	$ 72,234	$ 67,090	$ 130,373	$ (83,083)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2024
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

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
Basis of Presentation (Policies)	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation	The condensed consolidated financial statements of MSA Safety Incorporated and its subsidiaries ("MSA" or "the Company") are unaudited. These unaudited condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, considered necessary by management to fairly state the Company's results. Intercompany accounts and transactions have been eliminated. The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. The December 31, 2023, Balance Sheet data was derived from the audited Consolidated Balance Sheets, but does not include all disclosures required by accounting principles generally accepted in the United States of America ("U.S. GAAP"). This Form 10-Q report should be read in conjunction with MSA's Form 10-K for the year ended December 31, 2023, which includes all disclosures required by U.S. GAAP.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	6 Months Ended
Cash and Cash Equivalents (Tables)	Jun. 30, 2024
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents	The Company's net cash pool position consisted of the following: (In thousands) June 30, 2024 Gross cash pool position $ 96,109 Less: cash pool borrowings (91,690) Net cash pool position $ 4,419

Restructuring Charges (Tables)

Restructuring Charges (Tables)	6 Months Ended
Restructuring Charges (Tables)	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Schedule of Activity and Reserve Balance for Restructuring Charges by Segment	Activity and reserve balances for restructuring by segment were as follows: (In millions) Americas International Corporate Total Reserve balances at December 31, 2022 $ 1.7 $ 12.8 $ 0.5 $ 15.0 Restructuring charges 3.1 4.7 2.1 9.9 Currency translation (0.1) 0.1 — — Cash payments / utilization (3.9) (8.6) (2.6) (15.1) Reserve balances at December 31, 2023 $ 0.8 $ 9.0 $ — $ 9.8 Restructuring charges 0.8 2.9 0.9 4.6 Currency translation (0.1) (0.2) — (0.3) Cash payments (1.2) (5.5) (0.9) (7.6) Reserve balances at June 30, 2024 $ 0.3 $ 6.2 $ — $ 6.5

Inventories (Tables)

Inventories (Tables)	6 Months Ended
Inventories (Tables)	Jun. 30, 2024
Inventory Disclosure [Abstract]
Schedule of Inventories	The following table sets forth the components of inventory: (In thousands) June 30, 2024 December 31, 2023 Finished products $ 104,057 $ 88,687 Work in process 18,704 15,378 Raw materials and supplies 198,138 188,539 Total inventories $ 320,899 $ 292,604

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
Property, Plant and Equipment (Tables)	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	The following table sets forth the components of property, plant and equipment, net: (In thousands) June 30, 2024 December 31, 2023 Land $ 4,292 $ 4,332 Buildings 142,335 141,027 Machinery and equipment 496,349 498,148 Construction in progress 26,334 24,404 Total 669,310 667,911 Less: accumulated depreciation (456,151) (456,034) Property, plant and equipment, net $ 213,159 $ 211,877

Reclassifications Out of Accu_2

Reclassifications Out of Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Reclassification Out of Accumulated Other Comprehensive Loss	Changes in accumulated other comprehensive loss were as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Pension and other post-retirement benefits (a) Balance at beginning of period $ (42,278) $ (49,896) $ (42,652) $ (50,335) Amounts reclassified from accumulated other comprehensive loss into net income (loss): Amortization of prior service credit (Note 14) (9) (24) (18) (48) Recognized net actuarial losses (Note 14) 2,271 185 2,668 370 Tax (benefit) expense (240) (46) (254) 232 Total amount reclassified from accumulated other comprehensive loss, net of tax, into net income (loss) 2,022 115 2,396 554 Balance at end of period $ (40,256) $ (49,781) $ (40,256) $ (49,781) Available-for-sale securities Balance at beginning of period $ — $ — $ — $ (2) Unrealized net gains on available-for-sale securities (Note 16) — — — 2 Balance at end of period $ — $ — $ — $ — Foreign currency translation Balance at beginning of period $ (97,270) $ (97,186) $ (86,597) $ (108,380) Reclassification from accumulated other comprehensive loss into net income (loss) (b) (1,200) — (1,200) — Foreign currency translation adjustments (8,822) 5,039 (19,495) 16,233 Balance at end of period $ (107,292) $ (92,147) $ (107,292) $ (92,147) (a) Amounts reclassified from accumulated other comprehensive loss into net income (loss) are included in the computation of net periodic pension and other post-retirement benefit costs (refer to Note 14—Pensions and Other Post-retirement Benefits). (b) Reclassification from accumulated other comprehensive loss into net income (loss) relates primarily to the recognition of non-cash net cumulative translation gains associated with certain foreign subsidiaries. The reclassifications are included in Currency exchange (gains) losses, net, within the unaudited Condensed Consolidated Statements of Income.

Capital Stock (Tables)

Capital Stock (Tables)	6 Months Ended
Capital Stock (Tables)	Jun. 30, 2024
Equity [Abstract]
Common Stock Activity	Common stock activity is summarized as follows: Three Months Ended June 30, 2024 Three Months Ended June 30, 2023 (In thousands) Common Treasury Cost (a) Common Treasury Cost (a) Balance at beginning of period $ 315,241 $ (365,999) $ 287,009 $ (362,280) Stock compensation expense 5,042 — 6,759 — Restricted and performance stock awards (348) 348 (190) 190 Stock options exercised 47 27 354 184 Treasury shares purchased for stock compensation programs — (992) — (184) Employee stock purchase program 574 60 432 65 Share repurchase program — (10,000) — — Balance at end of period $ 320,556 $ (376,556) $ 294,364 $ (362,025) (a) Excludes treasury cost related to preferred stock. Six Months Ended June 30, 2024 Six Months Ended June 30, 2023 (In thousands) Common Treasury Cost (a) Common Treasury Cost (a) Balance at beginning of period $ 312,324 $ (361,684) $ 281,980 $ (359,838) Stock compensation expense 9,229 — 13,029 — Restricted and performance stock awards (1,783) 1,783 (1,434) 1,434 Stock options exercised 212 114 357 185 Treasury shares purchased for stock compensation programs — (6,829) — (3,871) Employee stock purchase program 574 60 432 65 Share repurchase program — (10,000) — — Balance at end of period $ 320,556 $ (376,556) $ 294,364 $ (362,025) (a) Excludes treasury cost related to preferred stock.

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
Segment Information (Tables)	Jun. 30, 2024
Segment Reporting [Abstract]
Schedule of Reportable Segment Information	Reportable segment information is presented in the following table: (In thousands, except percentages) Americas International Corporate Consolidated Three Months Ended June 30, 2024 Net sales to external customers $ 314,711 $ 147,752 $ — $ 462,463 Operating income 99,944 Restructuring charges (Note 3) 1,543 Currency exchange gains, net (603) Net cost for product related legal matter 5,000 Amortization of acquisition-related intangible assets 2,306 Adjusted operating income (loss) 98,468 24,285 (14,563) 108,190 Adjusted operating margin % 31.3 % 16.4 % Depreciation and amortization 13,741 Adjusted EBITDA 108,230 28,052 (14,351) 121,931 Adjusted EBITDA margin % 34.4 % 19.0 % Three Months Ended June 30, 2023 Net sales to external customers $ 308,378 $ 138,921 $ — $ 447,299 Operating income 95,008 Restructuring charges (Note 3) 3,350 Currency exchange losses, net 3,110 Amortization of acquisition-related intangible assets 2,315 Adjusted operating income (loss) 94,816 21,743 (12,776) 103,783 Adjusted operating margin % 30.7 % 15.7 % Depreciation and amortization 12,574 Adjusted EBITDA 103,977 24,949 (12,569) 116,357 Adjusted EBITDA margin % 33.7 % 18.0 % (In thousands, except percentages) Americas International Corporate Consolidated Six Months Ended June 30, 2024 Net sales to external customers $ 610,249 $ 265,516 $ — $ 875,765 Operating income 180,056 Restructuring charges (Note 3) 4,560 Currency exchange losses, net 1,730 Net cost for product related legal matter 5,000 Amortization of acquisition-related intangible assets 4,620 Transaction costs (a) 234 Adjusted operating income (loss) 184,688 37,770 (26,258) 196,200 Adjusted operating margin % 30.3 % 14.2 % Depreciation and amortization 26,985 Adjusted EBITDA 203,923 45,097 (25,835) 223,185 Adjusted EBITDA margin % 33.4 % 17.0 % Six Months Ended June 30, 2023 Net sales to external customers $ 588,645 $ 256,916 $ — $ 845,561 Operating income 34,947 Restructuring charges (Note 3) 5,097 Currency exchange losses, net 7,285 Loss on divestiture of MSA LLC (Note 17) 129,211 Product liability expense (Note 17) 3 Amortization of acquisition-related intangible assets 4,620 Adjusted operating income (loss) 166,510 37,522 (22,869) 181,163 Adjusted operating margin % 28.3 % 14.6 % Depreciation and amortization 24,841 Adjusted EBITDA 184,471 44,007 (22,474) 206,004 Adjusted EBITDA margin % 31.3 % 17.1 % (a) Transaction costs include advisory, legal, accounting, valuation, and other professional or consulting fees incurred during acquisitions and divestitures. These costs are included in Selling, general and administrative expense in the unaudited Condensed Consolidated Statements of Operations.
Percentage of Total Sales by Product Group	Total sales by product group was as follows: Three Months Ended June 30, 2024 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 172,269 37% $ 118,487 38% $ 53,782 37% Detection (b) 170,848 37% 111,405 35% 59,443 40% Industrial PPE and Other (c) 119,346 26% 84,819 27% 34,527 23% Total $ 462,463 100% $ 314,711 100% $ 147,752 100% Three Months Ended June 30, 2023 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 166,490 37% $ 121,157 39% $ 45,333 33% Detection (b) 158,242 35% 104,374 34% 53,868 39% Industrial PPE and Other (c) 122,567 28% 82,847 27% 39,720 28% Total $ 447,299 100% $ 308,378 100% $ 138,921 100% Six Months Ended June 30, 2024 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 335,962 39% $ 240,738 39% $ 95,224 36% Detection (b) 310,064 35% 207,700 34% 102,364 38% Industrial PPE and Other (c) 229,739 26% 161,811 27% 67,928 26% Total $ 875,765 100% $ 610,249 100% $ 265,516 100% Six Months Ended June 30, 2023 Consolidated Americas International (In thousands, except percentages) Dollars Percent Dollars Percent Dollars Percent Fire Service (a) $ 305,878 36% $ 223,213 38% $ 82,665 32% Detection (b) 304,843 36% 203,685 35% 101,158 39% Industrial PPE and Other (c) 234,840 28% 161,747 27% 73,093 29% Total $ 845,561 100% $ 588,645 100% $ 256,916 100% (a) Fire Service includes Breathing Apparatus and Firefighter Helmets and Protective Apparel. (b) Detection includes Fixed Gas and Flame Detection and Portable Gas detection. (c) Industrial PPE and Other includes Industrial Head Protection, Fall Protection and Non-Core.

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	6 Months Ended
Earnings (Loss) per Share (Tables)	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Three Months Ended June 30, Six Months Ended June 30, (In thousands, except per share values) 2024 2023 2024 2023 Net income (loss) $ 72,234 $ 67,090 $ 130,373 $ (83,083) Preferred stock dividends (10) (10) (20) (20) Net income (loss) attributable to common equity 72,224 67,080 130,353 (83,103) Dividends and undistributed earnings allocated to participating securities (6) (8) (13) (8) Net income (loss) attributable to common shareholders 72,218 67,072 130,340 (83,111) Basic weighted-average shares outstanding 39,389 39,274 39,375 39,249 Stock-based compensation awards (a) 152 135 174 — Diluted weighted-average shares outstanding 39,541 39,409 39,549 39,249 Antidilutive shares — — — 158 Earnings (loss) per share: Basic $ 1.83 $ 1.71 $ 3.31 $ (2.12) Diluted $ 1.83 $ 1.70 $ 3.30 $ (2.12) (a) During periods in which the Company incurs a net loss, stock-based compensation awards are excluded from the computation of diluted earnings per share because their effect would be anti-dilutive. As such, during periods in which the Company incurs a net loss, diluted weighted-average shares outstanding are equivalent to basic weighted-average shares outstanding.

Stock Plans (Tables)

Stock Plans (Tables)	6 Months Ended
Stock Plans (Tables)	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Stock Compensation Expense	Stock compensation expense, included in Selling, general and administrative expense in the unaudited Condensed Consolidated Statements of Operations, is as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2024 2023 2024 2023 Stock compensation expense $ 5,042 $ 6,759 $ 9,229 $ 13,029 Income tax benefit 1,235 1,656 2,261 3,192 Stock compensation expense, net of tax $ 3,807 $ 5,103 $ 6,968 $ 9,837
Summary of Stock Option Activity	A summary of stock option activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Outstanding at January 1, 2024 26,536 $ 45.95 Exercised (7,070) 46.13 Forfeited (852) 48.65 Outstanding and exercisable at June 30, 2024 18,614 $ 45.76
Summary of Restricted Stock and Unit Activity	A summary of restricted stock activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Unvested at January 1, 2024 173,851 $ 142.73 Granted 81,658 178.52 Vested (43,946) 165.12 Forfeited (21,904) 166.54 Unvested at June 30, 2024 189,659 $ 150.08
Schedule of Fair Value Assumptions for Units	The following weighted average assumptions were used in estimating the fair value of the performance stock units granted in the first quarter of 2024. Fair value per unit $181.31 Risk-free interest rate 4.34% Expected dividend yield 1.19% Expected volatility 25.9% MSA stock beta 0.728
Summary of Performance Stock Unit Activity	A summary of performance stock unit activity for the six months ended June 30, 2024, is as follows: Shares Weighted Average Unvested at January 1, 2024 189,221 $ 146.17 Granted 40,231 177.30 Performance adjustments (a) 21,143 193.10 Vested (78,199) 174.03 Forfeited (5,895) 158.69 Unvested at June 30, 2024 166,501 $ 146.13 (a) Performance adjustments relate primarily to the final number of shares issued for the 2021 performance unit awards which vested in the first quarter of 2024 at 174% of the target award based on both cumulative performance against EBITDA margin and revenue growth targets and MSA's TSR during the three

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
Long-Term Debt (Tables)	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Debt	(In thousands) June 30, 2024 December 31, 2023 2016 Senior Notes payable through 2031, 3.40%, net of debt issuance costs $ 53,966 $ 62,081 2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs 99,743 99,733 2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs 99,743 99,733 2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs 218,238 230,604 2023 Senior Notes payable through 2028, 5.25%, net of debt issuance costs 49,946 49,939 Senior revolving credit facility maturing in 2026, net of debt issuance costs 66,607 59,602 Total 588,243 601,692 Amounts due within one year 26,472 26,522 Long-term debt, net of debt issuance costs $ 561,771 $ 575,170

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	6 Months Ended
Goodwill and Intangible Assets, Net (Tables)	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Goodwill	Changes in goodwill during the six months ended June 30, 2024, were as follows: (In thousands) Goodwill Balance at January 1, 2024 $ 627,534 Currency translation (2,897) Balance at June 30, 2024 $ 624,637
Changes in Intangible Assets, Net of Accumulated Amortization	Changes in intangible assets, net, during the six months ended June 30, 2024, were as follows: (In thousands) Intangible Assets Net balance at January 1, 2024 $ 266,134 Amortization expense (8,967) Currency translation (839) Net balance at June 30, 2024 $ 256,328

Pensions and Other Post-retir_2

Pensions and Other Post-retirement Benefits (Tables)	6 Months Ended
Pensions and Other Post-retirement Benefits (Tables)	Jun. 30, 2024
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost	Components of Net periodic benefit (income) cost consisted of the following: Pension Benefits Other Benefits (In thousands) 2024 2023 2024 2023 Three Months Ended June 30, Service cost $ 2,315 $ 1,884 $ 44 $ 53 Interest cost 5,970 5,918 248 273 Expected return on plan assets (10,812) (9,906) — — Amortization of prior service cost (credit) 37 37 (46) (61) Recognized net actuarial losses 282 47 115 138 Settlements 1,308 — — — Net periodic benefit (income) cost (a) $ (900) $ (2,020) $ 361 $ 403 Six Months Ended June 30, Service cost $ 4,630 $ 3,768 $ 88 $ 106 Interest cost 11,940 11,836 496 546 Expected return on plan assets (21,624) (19,812) — — Amortization of prior service cost (credit) 74 74 (92) (122) Recognized net actuarial losses 564 94 230 276 Settlements 1,308 — — — Net periodic benefit (income) cost (a) $ (3,108) $ (4,040) $ 722 $ 806 (a) Components of Net periodic benefit (income) cost other than service cost are included in the line item Other income, net, and service costs are included in the line items Cost of products sold and Selling, general and administrative in the unaudited Condensed Consolidated Statements of Operations.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
Derivative Financial Instruments (Tables)	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Balance Sheet Location and Fair Value of Assets Associated with Derivative Financial Instruments	The following table presents the unaudited Condensed Consolidated Balance Sheets location and fair value of assets and liabilities associated with derivative financial instruments: (In thousands) June 30, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts: prepaid expenses and other current assets $ 159 $ 2,210 Foreign exchange contracts: other current liabilities 882 242
Income Statement Location and Impact of Derivative Financial Instruments	The following table presents the unaudited Condensed Consolidated Statements of Operations and unaudited Condensed Consolidated Statements of Cash Flows location and the loss (gain) impact of derivative financial instruments: Six Months Ended June 30, (In thousands) 2024 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts: currency exchange (gains) losses, net $ 3,659 $ 123

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
Commitments and Contingencies (Tables)	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	The following table reconciles changes in the Company's accrued warranty reserve: (In thousands) Six Months Ended June 30, 2024 Year Ended Beginning warranty reserve $ 14,288 $ 15,230 Warranty payments (5,387) (9,794) Warranty claims 4,826 8,899 Provision for product warranties and other adjustments 208 (47) Ending warranty reserve $ 13,935 $ 14,288

Cash and Cash Equivalents (Deta

Cash and Cash Equivalents (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Cash and Cash Equivalents [Abstract]
Gross cash pool position	$ 96,109
Less: cash pool borrowings	(91,690)
Net cash pool position	$ 4,419

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,543	$ 3,350	$ 4,560	$ 5,097
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges			900
Americas \| Reportable Segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges			800	2,200
International \| Reportable Segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 2,900	$ 1,500

Restructuring Charges - Activit

Restructuring Charges - Activity and Reserve Balance for Restructuring Charges by Segment (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 9.8	$ 15
Restructuring charges		9.9
Restructuring charges	4.6
Currency translation	(0.3)	0
Cash payments	(7.6)	(15.1)
Restructuring reserve, ending balance	6.5
Corporate
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	0.5
Restructuring charges		2.1
Restructuring charges	0.9
Currency translation	0	0
Cash payments	(0.9)	(2.6)
Restructuring reserve, ending balance	0
Americas \| Reportable Segments
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.8	1.7
Restructuring charges		3.1
Restructuring charges	0.8
Currency translation	(0.1)	(0.1)
Cash payments	(1.2)	(3.9)
Restructuring reserve, ending balance	0.3
International \| Reportable Segments
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	9	12.8
Restructuring charges		4.7
Restructuring charges	2.9
Currency translation	(0.2)	0.1
Cash payments	(5.5)	$ (8.6)
Restructuring reserve, ending balance	$ 6.2

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Finished products	$ 104,057	$ 88,687
Work in process	18,704	15,378
Raw materials and supplies	198,138	188,539
Total inventories	$ 320,899	$ 292,604

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 669,310	$ 667,911
Less: accumulated depreciation	(456,151)	(456,034)
Property, plant and equipment, net	213,159	211,877
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,292	4,332
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	142,335	141,027
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	496,349	498,148
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 26,334	$ 24,404

Reclassifications Out of Accu_3

Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period			$ 966,802
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	$ (1,200)	$ 0	(1,200)	$ 0
Other comprehensive income (loss)	(8,000)	5,154	(18,299)	16,789
Balance at end of period	1,033,647		1,033,647
Accumulated defined benefit plans adjustment attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(42,278)	(49,896)	(42,652)	(50,335)
Tax (benefit) expense	(240)	(46)	(254)	232
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	2,022	115	2,396	554
Balance at end of period	(40,256)	(49,781)	(40,256)	(49,781)
Accumulated defined benefit plans adjustment, net prior service attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss	(9)	(24)	(18)	(48)
Accumulated defined benefit plans adjustment, net gain (loss) attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss	2,271	185	2,668	370
Accumulated net investment gain (loss) attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	0	0	0	(2)
Other comprehensive income (loss)	0	0	0	2
Balance at end of period	0	0	0	0
Accumulated foreign currency adjustment attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(97,270)	(97,186)	(86,597)	(108,380)
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	(1,200)	0	(1,200)	0
Other comprehensive income (loss)	(8,822)	5,039	(19,495)	16,233
Balance at end of period	$ (107,292)	$ (92,147)	$ (107,292)	$ (92,147)

Capital Stock - Narrative (Deta

Capital Stock - Narrative (Details) - USD ($)	6 Months Ended		12 Months Ended
Capital Stock - Narrative (Details) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Capital Unit [Line Items]
Preferred stock, par value (dollars per share)	$ 50,000		$ 50,000
Cumulative preferred stock (percent)	4.50%		4.50%
Treasury shares, at cost	$ 378,156,000		$ 363,284,000
Common stock, shares authorized (shares)	180,000,000
Common stock, shares, outstanding (shares)	39,349,528		39,317,212
Treasury stock, common, shares (shares)	22,731,863		22,764,179
Preferred stock
Capital Unit [Line Items]
Treasury shares, at cost	$ 1,800,000
Cumulative Preferred Stock
Capital Unit [Line Items]
Preferred stock, shares authorized (shares)	100,000
Preferred stock, par value (dollars per share)	$ 50
Cumulative preferred stock (percent)	4.50%
Preferred stock, callable price per share (dollars per share)	$ 52.50
Preferred stock, shares issued (shares)	71,340		71,340
Treasury stock, preferred, shares (shares)	52,998		52,998
Purchase of treasury shares (shares)	0	0
Second Cumulative Preferred Voting Stock
Capital Unit [Line Items]
Preferred stock, shares authorized (shares)	1,000,000
Preferred stock, par value (dollars per share)	$ 10
Preferred stock, shares issued (shares)	0		0
Common Stock
Capital Unit [Line Items]
Purchase of treasury shares (shares)	52,561	0
Common stock, shares issued (shares)	62,081,391		62,081,391
Stock issued during period, new issues (shares)	0	0
Common stock, value, issued (up to)	$ 200,000,000
Treasury stock
Capital Unit [Line Items]
Reissued shares (shares)	121,790	105,894

Capital Stock - Schedule of Com

Capital Stock - Schedule of Common Stock Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Common Stock
Common Stock Activity [Roll Forward]
Beginning balance	$ 315,241	$ 287,009	$ 312,324	$ 281,980
Stock compensation expense	5,042	6,759	9,229	13,029
Ending balance	320,556	294,364	320,556	294,364
Treasury Cost
Common Stock Activity [Roll Forward]
Beginning balance	(365,999)	(362,280)	(361,684)	(359,838)
Stock compensation expense	0	0	0	0
Ending balance	(376,556)	(362,025)	(376,556)	(362,025)
Restricted and performance stock awards \| Common Stock
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	(348)	(190)	(1,783)	(1,434)
Restricted and performance stock awards \| Treasury Cost
Common Stock Activity [Roll Forward]
Restricted and performance stock awards	348	190	1,783	1,434
Stock options exercised \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	47	354	212	357
Stock options exercised \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	27	184	114	185
Treasury shares purchased for stock compensation programs \| Common Stock
Common Stock Activity [Roll Forward]
Treasury shares purchased for stock compensation programs	0	0	0	0
Treasury shares purchased for stock compensation programs \| Treasury Cost
Common Stock Activity [Roll Forward]
Treasury shares purchased for stock compensation programs	(992)	(184)	(6,829)	(3,871)
Employee stock purchase program \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	574	432	574	432
Employee stock purchase program \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	60	65	60	65
Share repurchase program \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	0	0	0	0
Share repurchase program \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	$ (10,000)	$ 0	$ (10,000)	$ 0

Segment Information - Additiona

Segment Information - Additional Information (Details)	6 Months Ended
Segment Information - Additional Information (Details)	Jun. 30, 2024 Segment
Segment Reporting [Abstract]
Number of geographical segments (in segments)	4
Number of reportable segments (in segments)	3

Segment Information - Schedule

Segment Information - Schedule of Reportable Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net sales to external customers	$ 462,463	$ 447,299	$ 875,765	$ 845,561
Operating income	99,944	95,008	180,056	34,947
Restructuring charges	1,543	3,350	4,560	5,097
Currency exchange gains (losses), net	(603)	3,110	1,730	7,285
Product liability expense (Note 17)	5,000		5,000
Loss on divestiture of MSA LLC	0	0	0	129,211
Product liability expense				3
Amortization of acquisition-related intangible assets	2,306	2,315	4,620	4,620
Acquisition related costs			234
Adjusted operating income (loss)	108,190	103,783	196,200	181,163
Depreciation and amortization	13,741	12,574	26,985	24,841
Adjusted EBITDA	121,931	116,357	223,185	206,004
Americas
Segment Reporting Information [Line Items]
Net sales to external customers	314,711	308,378	610,249	588,645
Reportable Segments \| Americas
Segment Reporting Information [Line Items]
Net sales to external customers	314,711	308,378	610,249	588,645
Restructuring charges			800	2,200
Adjusted operating income (loss)	$ 98,468	$ 94,816	$ 184,688	$ 166,510
Adjusted operating margin, percentage	31.30%	30.70%	30.30%	28.30%
Adjusted EBITDA	$ 108,230	$ 103,977	$ 203,923	$ 184,471
Adjusted EBITDA, percentage	34.40%	33.70%	33.40%	31.30%
Reportable Segments \| International
Segment Reporting Information [Line Items]
Net sales to external customers	$ 147,752	$ 138,921	$ 265,516	$ 256,916
Adjusted operating income (loss)	$ 24,285	$ 21,743	$ 37,770	$ 37,522
Adjusted operating margin, percentage	16.40%	15.70%	14.20%	14.60%
Adjusted EBITDA	$ 28,052	$ 24,949	$ 45,097	$ 44,007
Adjusted EBITDA, percentage	19%	18%	17%	17.10%
Corporate
Segment Reporting Information [Line Items]
Net sales to external customers	$ 0	$ 0	$ 0	$ 0
Restructuring charges			900
Adjusted operating income (loss)	(14,563)	(12,776)	(26,258)	(22,869)
Adjusted EBITDA	$ (14,351)	$ (12,569)	$ (25,835)	$ (22,474)

Segment Information - Percentag

Segment Information - Percentage of Total Sales by Product Group (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from External Customer [Line Items]
Revenues	$ 462,463	$ 447,299	$ 875,765	$ 845,561
Fire Service
Revenue from External Customer [Line Items]
Revenues	172,269	166,490	335,962	305,878
Detection
Revenue from External Customer [Line Items]
Revenues	170,848	158,242	310,064	304,843
Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 119,346	$ 122,567	$ 229,739	$ 234,840
Revenue Benchmark \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100%	100%	100%	100%
Revenue Benchmark \| Fire Service \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	37%	37%	39%	36%
Revenue Benchmark \| Detection \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	37%	35%	35%	36%
Revenue Benchmark \| Industrial PPE and Other \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	26%	28%	26%	28%
Americas
Revenue from External Customer [Line Items]
Revenues	$ 314,711	$ 308,378	$ 610,249	$ 588,645
Americas \| Fire Service
Revenue from External Customer [Line Items]
Revenues	118,487	121,157	240,738	223,213
Americas \| Detection
Revenue from External Customer [Line Items]
Revenues	111,405	104,374	207,700	203,685
Americas \| Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 84,819	$ 82,847	$ 161,811	$ 161,747
Americas \| Revenue Benchmark \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100%	100%	100%	100%
Americas \| Revenue Benchmark \| Fire Service \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	38%	39%	39%	38%
Americas \| Revenue Benchmark \| Detection \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	35%	34%	34%	35%
Americas \| Revenue Benchmark \| Industrial PPE and Other \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	27%	27%	27%	27%
International
Revenue from External Customer [Line Items]
Revenues	$ 147,752	$ 138,921	$ 265,516	$ 256,916
International \| Fire Service
Revenue from External Customer [Line Items]
Revenues	53,782	45,333	95,224	82,665
International \| Detection
Revenue from External Customer [Line Items]
Revenues	59,443	53,868	102,364	101,158
International \| Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 34,527	$ 39,720	$ 67,928	$ 73,093
International \| Revenue Benchmark \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100%	100%	100%	100%
International \| Revenue Benchmark \| Fire Service \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	37%	33%	36%	32%
International \| Revenue Benchmark \| Detection \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	40%	39%	38%	39%
International \| Revenue Benchmark \| Industrial PPE and Other \| Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	23%	28%	26%	29%

Earnings (Loss) per Share (Deta

Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income (loss)	$ 72,234	$ 67,090	$ 130,373	$ (83,083)
Preferred stock dividends	(10)	(10)	(20)	(20)
Net income (loss) attributable to common equity	72,224	67,080	130,353	(83,103)
Dividends and undistributed earnings allocated to participating securities	(6)	(8)	(13)	(8)
Net income (loss) attributable to common shareholders	$ 72,218	$ 67,072	$ 130,340	$ (83,111)
Basic weighted-average shares outstanding (shares)	39,389	39,274	39,375	39,249
Stock-based compensation awards (shares)	152	135	174	0
Diluted weighted-average shares outstanding (shares)	39,541	39,409	39,549	39,249
Antidilutive stock options (shares)	0	0	0	158
Earnings (loss) per share:
Basic (in dollars per share)	$ 1.83	$ 1.71	$ 3.31	$ (2.12)
Diluted (in dollars per share)	$ 1.83	$ 1.70	$ 3.30	$ (2.12)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Income Tax Contingency [Line Items]
Effective income tax rate	23.50%	23.30%	23.30%	520.80%
Unrecognized tax benefits	$ 7,300		$ 7,300
Insurance receivable and other noncurrent assets	18,050		18,050		$ 19,811
Accrued interest and penalties related to uncertain tax positions	200		200
Deferred tax asset
Income Tax Contingency [Line Items]
Insurance receivable and other noncurrent assets	$ 600		$ 600

Stock Plans - Schedule of Stock

Stock Plans - Schedule of Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock compensation expense	$ 5,042	$ 6,759	$ 9,229	$ 13,029
Income tax benefit	1,235	1,656	2,261	3,192
Stock compensation expense, net of tax	$ 3,807	$ 5,103	$ 6,968	$ 9,837

Stock Plans - Summary of Stock

Stock Plans - Summary of Stock Option Activity (Details)	6 Months Ended
Stock Plans - Summary of Stock Option Activity (Details)	Jun. 30, 2024 $ / shares shares
Shares
Outstanding, beginning balance (in shares) \| shares	26,536
Exercised (in shares) \| shares	(7,070)
Forfeited (in shares) \| shares	(852)
Outstanding, ending balance (in shares) \| shares	18,614
Exercisable (in shares) \| shares	18,614
Weighted Average Grant Date Fair Value
Outstanding, beginning balance (dollars per share) \| $ / shares	$ 45.95
Exercised (dollars per share) \| $ / shares	46.13
Forfeited (dollars per share) \| $ / shares	48.65
Outstanding, ending balance (dollars per share) \| $ / shares	45.76
Exercisable (dollars per share) \| $ / shares	$ 45.76

Stock Plans - Summary of Restri

Stock Plans - Summary of Restricted Stock and Unit Activity (Details) - Restricted Stock Activity	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Shares
Unvested, beginning balance (in shares) \| shares	173,851
Granted (in shares) \| shares	81,658
Vested (in shares) \| shares	(43,946)
Forfeited (in shares) \| shares	(21,904)
Unvested, ending balance (in shares) \| shares	189,659
Weighted Average Grant Date Fair Value
Unvested, beginning balance (dollars per share) \| $ / shares	$ 142.73
Granted (dollars per share) \| $ / shares	178.52
Vested (dollars per share) \| $ / shares	165.12
Forfeited (dollars per share) \| $ / shares	166.54
Unvested, ending Balance (dollars per share) \| $ / shares	$ 150.08

Stock Plans - Additional Inform

Stock Plans - Additional Information (Details)	6 Months Ended
Stock Plans - Additional Information (Details)	Jun. 30, 2024
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award based on achieving targeted performance conditions	0%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award based on achieving targeted performance conditions	200%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value assumptions, average closing price used to calculate expected dividend rate, period (years)	1 year
Stock beta, daily price data period (years)	3 years

Stock Plans - Weighted Average

Stock Plans - Weighted Average Risk Assumptions (Details) - Performance Stock Unit	6 Months Ended
	Jun. 30, 2024 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per unit (dollars per share)	$ 177.30
Monte Carlo Approach
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per unit (dollars per share)	$ 181.31
Risk-free interest rate	4.34%
Expected dividend yield	1.19%
Expected volatility	25.90%
MSA stock beta	0.728

Stock Plans - Summary of Perfor

Stock Plans - Summary of Performance Stock Unit Activity (Details)	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Weighted Average Grant Date Fair Value
Percentage of target award based on achieving specified performance targets	174%
Performance Stock Unit
Shares
Unvested, beginning balance (in shares) \| shares	189,221
Granted (in shares) \| shares	40,231
Performance adjustments (in shares) \| shares	21,143
Vested (in shares) \| shares	(78,199)
Forfeited (in shares) \| shares	(5,895)
Unvested, ending balance (in shares) \| shares	166,501
Weighted Average Grant Date Fair Value
Unvested, beginning balance (dollars per share) \| $ / shares	$ 146.17
Granted (dollars per share) \| $ / shares	177.30
Performance adjustments (dollars per share) \| $ / shares	193.10
Vested (dollars per share) \| $ / shares	174.03
Forfeited (dollars per share) \| $ / shares	158.69
Unvested, ending Balance (dollars per share) \| $ / shares	$ 146.13
Award vesting period	3 years

Long-Term Debt - Schedule of De

Long-Term Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 29, 2023	Jan. 05, 2023	Jul. 01, 2021
Debt Instrument [Line Items]
Senior revolving credit facility maturing in 2026, net of debt issuance costs	$ 66,607	$ 59,602
Total	588,243	601,692
Amounts due within one year	26,472	26,522
Long-term debt, net of debt issuance costs	$ 561,771	575,170
2016 Senior Notes payable through 2031, 3.40%, net of debt issuance costs
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage	3.40%
Senior notes payable	$ 53,966	62,081
2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage	2.69%
Senior notes payable	$ 99,743	99,733
2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage					2.69%
2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage	2.69%
Senior notes payable	$ 99,743	99,733
2021 Senior Notes payable through 2036, 2.69%, net of debt issuance costs \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage					2.69%
2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs \| Secured Debt \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage	6.43%
Total	$ 218,238	230,604		$ 250,000
2023 Senior Notes payable through 2028, 5.25%, net of debt issuance costs \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage	5.25%		5.25%
Total	$ 49,946	$ 49,939

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details)					6 Months Ended
Long-Term Debt - Additional Information (Details)	Jun. 29, 2023 USD ($)	Jan. 05, 2023 USD ($)	May 24, 2021 USD ($)	Jan. 04, 2019	Jun. 30, 2024 USD ($)	Jun. 30, 2024 GBP (£)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jul. 01, 2021 USD ($)
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 900,000,000
Weighted average revolving interest rate, percentage					6.23%
Line of credit facility, remaining borrowing capacity					$ 831,400,000
Line of credit facility, accordion feature					400,000,000
Amounts due within one year					26,472,000		$ 26,522,000
Minimum fixed charges coverage ratio (not less than)				1.50
Maximum consolidated leverage ratio (not to exceed)				3.50
Consolidated leverage ratio (not more than)				4
Long term debt					588,243,000		601,692,000
Restricted cash included in prepaid expenses and other current assets					2,005,000			$ 1,980,000
Standby Letters of Credit
Debt Instrument [Line Items]
Proceeds from lines of credit					10,200,000
Senior Revolving Credit Facility Maturing in 2023 \| Standby Letters of Credit
Debt Instrument [Line Items]
Proceeds from lines of credit					$ 1,100,000
Series C Senior Notes Due July 2036
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage					2.69%	2.69%
Series A Senior Notes Due 2036
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage					2.69%	2.69%
Senior Notes \| Series C Senior Notes Due July 2036
Debt Instrument [Line Items]
Aggregate principal amount									$ 100,000,000
Debt instrument, stated interest rate percentage									2.69%
Senior Notes \| Series A Senior Notes Due 2036
Debt Instrument [Line Items]
Aggregate principal amount									$ 100,000,000
Debt instrument, stated interest rate percentage									2.69%
Senior Notes \| NYL Note Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ 200,000,000
Senior Notes \| Senior Notes Due 2028
Debt Instrument [Line Items]
Aggregate principal amount	$ 50,000,000
Debt instrument, stated interest rate percentage	5.25%				5.25%	5.25%
Principal of debt amount due in year before maturity	$ 25,000,000
Principal of debt amount due at maturity	$ 25,000,000
Long term debt					$ 49,946,000		49,939,000
Unsecured Debt \| Series C Senior Notes Due July 2036
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ 335,000,000
Notes Payable \| Multi-currency Notes Due in 2031
Debt Instrument [Line Items]
Aggregate principal amount					$ 54,100,000	£ 42,700,000
Debt instrument, stated interest rate percentage					3.40%	3.40%
Amounts due within one year					$ 7,700,000	£ 6,100,000
Line of Credit \| 2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs \| Secured Debt
Debt Instrument [Line Items]
Debt instrument, stated interest rate percentage					6.43%	6.43%
Long term debt		$ 250,000,000			$ 218,238,000		$ 230,604,000
Base Rate \| Senior Revolving Credit Facility Maturing in 2023
Debt Instrument [Line Items]
Interest rate margin, percentage			0%
Overnight Bank Funding Rate \| Senior Revolving Credit Facility Maturing in 2023
Debt Instrument [Line Items]
Interest rate margin, percentage			0.50%
Secured Overnight Financing Rate (SOFR) \| Senior Revolving Credit Facility Maturing in 2023
Debt Instrument [Line Items]
Interest rate margin, percentage			1%
Minimum \| Senior Revolving Credit Facility Maturing in 2023
Debt Instrument [Line Items]
Interest rate margin, percentage			0%
Minimum \| Line of Credit \| 2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs \| Secured Debt
Debt Instrument [Line Items]
Basis spread on EBITDA leverage ratio and elected rate		0%
Maximum \| Senior Revolving Credit Facility Maturing in 2023
Debt Instrument [Line Items]
Interest rate margin, percentage			1.75%
Maximum \| Line of Credit \| 2023 Term Loan credit agreement maturing in 2026, net of debt issuance costs \| Secured Debt
Debt Instrument [Line Items]
Basis spread on EBITDA leverage ratio and elected rate		2%

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Changes in Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 627,534
Currency translation	(2,897)
Ending balance	$ 624,637

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 624,637	$ 627,534
Americas
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	447,600
International
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	177,000
Trade name \| Globe Holding Company LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 60,000

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets, Net - Changes in Intangible Assets, Net of Accumulated Amortization (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 266,134
Amortization expense	(8,967)
Currency translation	(839)
Ending balance	$ 256,328

Pensions and Other Post-retir_3

Pensions and Other Post-retirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,315	$ 1,884	$ 4,630	$ 3,768
Interest cost	5,970	5,918	11,940	11,836
Expected return on plan assets	(10,812)	(9,906)	(21,624)	(19,812)
Amortization of prior service cost (credit)	37	37	74	74
Recognized net actuarial losses	282	47	564	94
Settlements	1,308	0	1,308	0
Net periodic benefit (income) cost	(900)	(2,020)	(3,108)	(4,040)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	44	53	88	106
Interest cost	248	273	496	546
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	(46)	(61)	(92)	(122)
Recognized net actuarial losses	115	138	230	276
Settlements	0	0	0	0
Net periodic benefit (income) cost	$ 361	$ 403	$ 722	$ 806

Pensions and Other Post-retir_4

Pensions and Other Post-retirement Benefits - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Retirement Benefits [Abstract]
Pension plans contributions	$ 2.6	$ 4.1
Total estimated pension plans contributions for the fiscal year	$ 5.3

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Foreign Exchange Forward
Derivative [Line Items]
Notional amount of open forward contracts	$ 113.6	$ 110.9

Derivative Financial Instrume_4

Derivative Financial Instruments - Balance Sheet Location and Fair Value of Assets Associated with Derivative Financial Instruments (Details) - Not designated as hedging instrument - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivatives not designated as hedging instruments:	$ 882	$ 242
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Foreign exchange contracts: other current liabilities	$ 159	$ 2,210

Derivative Financial Instrume_5

Derivative Financial Instruments - Income Statement Location and Impact of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Not designated as hedging instrument
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts: currency exchange (gains) losses, net	$ 3,659	$ 123

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Reported Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value disclosure	$ 304.1	$ 312.2
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value disclosure	$ 263.9	$ 278.7

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 05, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jul. 17, 2024 claim classAction lawsuit	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Product liability expense		$ 0	$ 0	$ 0	$ 3
Tax-effected loss on divestiture				0	199,578
Product warranty expense				5,000	4,700
Product liability expense (Note 17)		5,000		5,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Loss Contingencies [Line Items]
Remaining performance obligation, amount		$ 29,500		$ 29,500
Remaining performance obligation, expected timing of satisfaction		3 years		3 years
MSA LLC \| Joint Venture By R&Q Insurance Holdings Ltd. And Obra Capital, Inc.
Loss Contingencies [Line Items]
Contributed cash and cash equivalents by acquiree	$ 35,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| MSA LLC
Loss Contingencies [Line Items]
Disposal group, contributed cash and cash equivalents	$ 341,200
Tax-effected loss on divestiture		$ 199,600
Disposal group, transaction costs				$ 5,600
Single incident
Loss Contingencies [Line Items]
Product liability accrual		$ 1,400		1,400			$ 1,300
Product liability expense				$ 100	$ 100
Damages From Product Substances \| Subsequent Event
Loss Contingencies [Line Items]
Number of pending lawsuits \| lawsuit						659
Number of pending claims \| claim						12,137
Number of pending class actions \| classAction						2

Contingencies - Schedule of Pro

Contingencies - Schedule of Product Warranty Liability (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2024	Sep. 30, 2023
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Beginning warranty reserve	$ 14,288	$ 15,230
Warranty payments	(5,387)	(9,794)
Warranty claims	4,826	8,899
Provision for product warranties and other adjustments	208	$ (47)
Ending warranty reserve	$ 13,935