Immersion (IMMR) 10-Q8 May 202020 Q1 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2020	May 01, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-38334
Entity Registrant Name	IMMERSION CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3180138
Entity Address, Address Line One	330 Townsend Street, Suite 234
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94107
City Area Code	408
Local Phone Number	467-1900
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	IMMR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		27,859,062
Amendment Flag	false
Entity Central Index Key	0001058811
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Former Address
Entity Information [Line Items]
Entity Address, Address Line One	50 Rio Robles
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 76,229	$ 86,478
Short-term investments	0	3,019
Accounts and other receivables	5,587	3,385
Prepaid expenses and other current assets	9,275	14,078
Total current assets	91,091	106,960
Property and equipment, net	283	1,226
Other assets	16,115	16,662
Total assets	107,489	124,848
Current liabilities:
Accounts payable	937	809
Accrued compensation	1,989	2,844
Other current liabilities	4,173	3,478
Deferred revenue	4,617	4,692
Total current liabilities	11,716	11,823
Long-term deferred revenue	24,725	25,952
Other long-term liabilities	3,304	3,316
Total liabilities	39,745	41,091
Contingencies (Note 10)
Stockholders’ equity:
Common stock and additional paid-in capital — $0.001 par value; 100,000,000 shares authorized; 38,824,681 and 38,624,784 shares issued, respectively; 29,601,459 and 31,414,328 shares outstanding, respectively	254,081	253,289
Accumulated other comprehensive income	122	124
Accumulated deficit	(123,393)	(118,565)
Treasury stock at cost: 9,223,222 and 7,210,456 shares, respectively	(63,066)	(51,091)
Total stockholders’ equity	67,744	83,757
Total liabilities and stockholders’ equity	$ 107,489	$ 124,848

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	38,824,681	38,624,784
Common stock, shares outstanding (in shares)	29,601,459	31,414,328
Treasury stock, shares (in shares)	9,223,222	7,210,456

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenue	$ 6,257	$ 5,122
Costs and expenses:
Cost of revenues	44	15
Sales and marketing	1,716	1,609
Research and development	1,689	2,302
General and administrative	7,356	12,695
Total costs and expenses	10,805	16,621
Operating loss	(4,548)	(11,499)
Interest and other income (loss)	(228)	598
Loss before provision for income taxes	(4,776)	(10,901)
Provision for income taxes	(52)	(115)
Net loss	$ (4,828)	$ (11,016)
Basic net loss per share (in dollars per share)	$ (0.16)	$ (0.35)
Shares used in calculating basic net loss per share (in shares)	31,006	31,089
Diluted net loss per share (in dollars per share)	$ (0.16)	$ (0.35)
Shares used in calculating diluted net loss per share (in shares)	31,006	31,089
Other comprehensive income
Change in unrealized gains (loss) on short-term investments	$ (2)	$ 6
Total other comprehensive income (loss)	(2)	6
Total comprehensive income (loss)	(4,830)	(11,010)
Royalty and license
Revenues:
Revenue	6,182	5,047
Development, services, and other
Revenues:
Revenue	$ 75	$ 75

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2018		37,652,498			6,823,147
Beginning balance at Dec. 31, 2018	$ 99,660	$ 246,415	$ 116	$ (98,521)	$ (48,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,016)			(11,016)
Unrealized gain (loss) on available-for-sale securities, net of taxes	6		6
Issuance of common stock for employee stock purchase (in shares)		13,479
Issuance of common stock for employee stock purchase	109	$ 109
Exercise of stock options, net of shares withheld for employee taxes (in shares)		11,771
Exercise of stock options, net of shares withheld for employee taxes	71	$ 71
Release of restricted stock units and awards (in shares)		697,996
Release of restricted stock units and awards	0
Stock based compensation	2,103	$ 2,103
Ending balance (in shares) at Mar. 31, 2019		38,375,744			6,823,147
Ending balance at Mar. 31, 2019	90,933	$ 248,698	122	(109,537)	$ (48,350)
Beginning balance (in shares) at Dec. 31, 2019		38,624,784			7,210,456
Beginning balance at Dec. 31, 2019	83,757	$ 253,289	124	(118,565)	$ (51,091)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,828)
Unrealized gain (loss) on available-for-sale securities, net of taxes	(2)		(2)
Repurchased shares (in shares)					2,012,766
Repurchase of stock	(11,975)				$ (11,975)
Issuance of common stock for employee stock purchase (in shares)		10,162
Issuance of common stock for employee stock purchase	63	$ 63
Release of restricted stock units and awards (in shares)		189,735
Release of restricted stock units and awards	0
Stock based compensation	729	$ 729
Ending balance (in shares) at Mar. 31, 2020		38,824,681			9,223,222
Ending balance at Mar. 31, 2020	$ 67,744	$ 254,081	$ 122	$ (123,393)	$ (63,066)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows provided by (used in) operating activities:
Net loss	$ (4,828)	$ (11,016)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,178	428
Stock-based compensation	729	2,103
Foreign currency translation loss	361	0
Other	0	117
Changes in operating assets and liabilities:
Accounts and other receivables	(2,202)	(454)
Prepaid expenses and other current assets	4,820	1,028
Other assets	(22)	(11,642)
Accounts payable	122	8,763
Accrued compensation	(855)	(2,588)
Other current liabilities	422	2,092
Deferred revenue	(1,302)	(904)
Other long-term liabilities	261	4,495
Net cash used in operating activities	(1,316)	(7,578)
Cash flows provided by (used in) investing activities:
Purchases of short-term investments	0	(8,930)
Proceeds from maturities of short-term investments	3,000	8,000
Purchases of property and equipment	(21)	(6)
Net cash provided by (used in) investing activities	2,979	(936)
Cash flows provided by (used in) financing activities:
Cash paid for purchases of treasury shares	(11,975)	0
Proceeds from issuance of common stock under employee stock purchase plan	63	109
Proceeds from stock options exercises	0	71
Net cash provided by (used in) financing activities	(11,912)	180
Net decrease in cash and cash equivalents	(10,249)	(8,334)
Cash and cash equivalents:
Beginning of period	86,478	110,988
End of period	76,229	102,654
Supplemental disclosure of cash flow information:
Leased assets obtained in exchange for new operating lease liabilities	577	0
Cash paid for income taxes	19	23
Supplemental disclosure of non-cash operating, investing, and financing activities:
Release of restricted stock units and awards under company stock plan	$ 1,356	$ 6,680

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
SIGNIFICANT ACCOUNTING POLICIES	Mar. 31, 2020
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	SIGNIFICANT ACCOUNTING POLICIES Description of Business Immersion Corporation (the "Company", "Immersion", "we" or "us")) was incorporated in 1993 in California and reincorporated in Delaware in 1999. We focus on the creation, design, development, and licensing of innovative haptic technologies that allow people to use their sense of touch more fully as they engage with products and experience the digital world around them. We have adopted a business model under which it provides advanced tactile software, related tools, technical assistance designed to help integrate our patented technology into our customers’ products or enhance the functionality of our patented technology to certain customers, and offers licenses to our patented technology to other customers. Impact of COVID-19 In March 2020, the World Health Organization declared Coronavirus Disease 2019 (“COVID-19”) to be a global pandemic and the President of the United States declared the COVID-19 outbreak a national emergency. The outbreak has resulted in governments around the world implementing increasingly stringent measures to help control the spread of the virus, which has resulted in a significant deterioration of economic conditions in many of the countries in which we operate. The spread of the COVID-19 virus has also caused us to modify our business practices (including implementing work-from-home policies and restricting travel by our employees) in ways that may be detrimental to our business. These practices may impact our ability to deploy our workforce effectively. These same developments may affect the operations of our suppliers and customers, as their own workforces and operations are disrupted by efforts to curtail the spread of this virus. While expected to be temporary, these disruptions may negatively impact our revenue, results of operations, financial condition, and liquidity in 2020. Principles of Consolidation and Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of Immersion Corporation and its wholly owned subsidiaries: Immersion Canada Corporation; Immersion International, LLC; Immersion Medical, Inc.; Immersion Japan K.K.; Immersion Ltd.; Immersion Software Ireland Ltd.; Haptify, Inc.; Immersion (Shanghai) Science & Technology Company, Ltd.; and Immersion Technology International Ltd. All intercompany accounts, transactions, and balances have been eliminated in consolidation. The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all information and footnotes necessary for a complete presentation of the financial position, results of operations, and cash flows, in conformity with U.S. GAAP and should be read in conjunction with our audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2019 . In the opinion of management, all adjustments consisting of only normal and recurring items necessary for the fair presentation of the financial position and results of operations for the interim periods presented have been included. The results of operations for the three months ended March 31, 2020 are not necessarily indicative of the results to be expected for the full year. Use of Estimates The preparation of condensed consolidated financial statements and related disclosures requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include valuation of income taxes including uncertain tax provisions, and revenue recognition. Actual results may differ materially from those estimates which were made based on the best information known to management at that time. Segment Information We develop, license, and support a wide range of software and IP that more fully engage users’ sense of touch when operating digital devices. We focus on the following target application areas: mobile devices, wearables, consumer, mobile entertainment and other content; console gaming; automotive; medical; and commercial. We manage these application areas in one operating and reporting segment with only one set of management, development, and administrative personnel. Our chief operating decision maker (“CODM”) is the Chief Executive Officer. The CODM approves budgets and allocates resources to and assesses the performance of our business using information about our revenue and operating loss. There is only one segment that is reported to management. Recently Adopted Accounting Pronouncements In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). This guidance requires financial assets measured at amortized cost to be presented at the net amount expected to be collected based on historical events, current conditions and forecast information. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2019 and early adoption is permitted. We adopted ASU 2016-13 as of January 1, 2020. The adoption of this new accounting standard did not have a material impact on our condensed consolidated financial statements. Recent Accounting Guidance Not Yet Adopted In December 2019, the FASB issued Accounting Standard Update No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which enhances and simplifies various aspects of the income tax accounting guidance, including requirements such as tax basis step-up in goodwill obtained in a transaction that is not a business combination, ownership changes in investments, and interim-period accounting for enacted changes in tax law. The amendment will be effective for public companies with fiscal years beginning after December 15, 2020; early adoption is permitted. We are evaluating the impact of this amendment on our condensed consolidated financial statements.

REVENUE RECOGNITION

REVENUE RECOGNITION	3 Months Ended
REVENUE RECOGNITION	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
REVENUE RECOGNITION	REVENUE RECOGNITION Revenue Recognition Accounting Policy Our revenue is primarily derived from fixed fee license agreements and per-unit royalty agreements, along with less significant revenue earned from development, services and other revenue. Fixed fee license revenue We are required to recognize revenue from a fixed fee license agreement when we have satisfied our performance obligations, which typically occurs upon the transfer of rights to our technology upon the execution of the license agreement. However, in certain contracts, we grant a license to our existing patent portfolio at the inception of the license agreement as well as rights to the portfolio as it evolves throughout the contract term. For such arrangements, we have concluded that there are two separate performance obligations: •Performance Obligation A: to transfer rights to our patent portfolio as it exists when the contract is executed; •Performance Obligation B: to transfer rights to our patent portfolio as it evolves over the term of the contract, including access to new patent applications that the licensee can benefit from over the term of the contract. If a fixed fee license agreement contains only Performance Obligation A, we will recognize most or all of the revenue from the agreement at the inception of the contract. For fixed fee license agreements that contain both Performance Obligation A and B, we will allocate the transaction price based on the standalone price for each of the two performance obligations. We use a number of factors primarily related to the attributes of our patent portfolio to estimate standalone prices related to Performance Obligation A and B. Once the transaction price is allocated, the portion of the transaction price allocable to Performance Obligation A will be recognized in the quarter the license agreement is signed and the customer can benefit from rights provided in the contract, and the portion allocable to Performance Obligation B will be recognized on a straight-line basis over the contract term. For such contracts, a contract liability account will be established and included within "deferred revenue" on the condensed consolidated balance sheet. As the rights and obligations in a contract are interdependent, contract assets and contract liabilities that arise in the same contract are presented on a net basis. Some of our license agreements contain fixed fees related to past infringements. Such fixed fees are recognized as revenue or recorded as a deduction to our operating expense in the quarter the license agreement is signed. Payments for fixed fee license contracts typically are due in full within 30 - 45 days from execution of the contract. From time to time, we enter into a fixed fee license contract with payments due in a number of installments payable throughout the contract term. In such cases, we will determine if a significant financing component exists and if it does, we will recognize more or less revenue and corresponding interest expense or income, as appropriate. Per-unit Royalty revenue ASC 606 requires an entity to record per-unit royalty revenue in the same period in which the licensee’s underlying sales occur. As we generally do not receive the per-unit licensee royalty reports for sales during a given quarter within the time frame that allows us to adequately review the reports and include the actual amounts in our quarterly results for such quarter, we accrue the related revenue based on estimates of our licensees’ underlying sales, subject to certain constraints on our ability to estimate such amounts. We develop such estimates based on a combination of available data including, but not limited to, approved customer forecasts, a lookback at historical royalty reporting for each of our customers, and industry information available for the licensed products. As a result of accruing per-unit royalty revenue for the quarter based on such estimates, adjustments will be required in the following quarter to true up revenue to the actual amounts reported by our licensees. During the three months ended March 31, 2020, we recorded a $0.1 million adjustment to decrease royalty revenue. This adjustment represents the difference between the actual per-unit royalty revenue for the three months ended December 31, 2019 as reported by our licensees during the three months ended March 31, 2020 and the estimated per-unit royalty revenue for the three months ended December 31, 2019 that we reported during the quarter. Certain of our per-unit royalty agreements contains a minimum royalty provision which sets forth minimum amounts to be received by us during the contract term. Under ASC 606, minimum royalties are considered a fixed transaction price to which we will have an unconditional right once all other performance obligations, if any, are satisfied. We recognize all minimum royalties as revenue at the inception of the license agreement, or in the period in which all remaining revenue recognition criteria have been met. We account for the unbilled minimum royalties as contract assets on a contract basis on our Condensed Consolidated Balance Sheets, and the balance of such contract assets will be reduced by the actual royalties to be reported by the licensee during the contract term until fully utilized, after which point any excess per-unit royalties reported will be recognized as revenue. As the rights and obligations in a contract are interdependent, contract assets and contract liabilities that arise in the same contract are presented on a net basis. Payments of per-unit royalties typically are due within 30 to 60 days from the end of the calendar quarter in which the underlying sales took place. Development, services, and other revenue As the performance obligation related to our development, service and other revenue is satisfied over a period of time, we recognize such revenue evenly over the period of performance obligation, which is generally consistent with the contractual term. Disaggregated Revenue The following table presents the disaggregation of our revenue for the three months ended March 31, 2019 and 2020 (in thousands). Three Months Ended March 31, 2020 2019 Fixed fee license revenue $ 1,287 $ 1,740 Per-Unit royalty revenue 4,895 3,307 Total royalty and license revenue 6,182 5,047 Development, services, and other revenue 75 75 Total revenues $ 6,257 $ 5,122 As of March 31, 2020 , we had contract assets of $8.3 million included within prepaid expenses and other current assets, and $6.4 million included within other non-current assets on the Condensed Consolidated Balance Sheets. As of December 31, 2019, we had contract assets of $13.1 million included within prepaid expenses and other current assets, and $6.9 million included within other non-current assets, net, on the Consolidated Balance Sheets. Contract assets decreased by $5.4 million from December 31, 2019 to March 31, 2020, primarily due to actual royalties billed during the three months ended March 31, 2020 that reduced the minimum royalties recorded in contract assets. Contracted Revenue Based on contracts signed and payments received as of March 31, 2020 , we expect to recognize $29.3 million in revenue related to Performance Obligation B under our fixed fee license agreements, which is satisfied over time, including $13.9 million over one to three years and $15.4 million over more than three years. Revenue related to Performance Obligation B was $30.0 million as of December 31, 2019

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
FAIR VALUE MEASUREMENTS	Mar. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Cash, Cash Equivalents and Short-term Investments Our financial instruments measured at fair value on a recurring basis are cash equivalents and short-term investments. Our fixed income available-for-sale securities consist of high quality, investment grade securities. We value these securities based on pricing from pricing vendors, who may use quoted prices in active markets for identical assets (Level 1) or inputs other than quoted prices that are observable either directly or indirectly (Level 2) in determining fair value. Financial instruments are valued based on quoted market prices in active markets include mostly money market securities. Such instruments are generally classified within Level 1 of the fair value hierarchy. Instruments valued based on quoted prices in markets that are less active, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency are generally classified within Level 2 of the fair value hierarchy and include U.S. treasury securities. Instruments valued based on unobservable inputs which reflect the reporting entity’s own assumptions or data that market participants would use in valuing an instrument are generally classified within Level 3 of the fair value hierarchy. As of March 31, 2020 and December 31, 2019 , we did not hold any Level 3 instruments. Financial instruments measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 are classified based on the valuation technique in the table below (in thousands): March 31, 2020 Fair Value Measurements Using Quoted Prices Significant Significant Total Assets: Money market accounts $ 60,546 $ — $ — $ 60,546 Total assets at fair value (1) $ 60,546 $ — $ — $ 60,546 (1) The above table excludes $15.7 million of cash held in banks. December 31, 2019 Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Significant Total Assets: Money market accounts $ 63,351 $ — $ — $ 63,351 U.S. Treasury securities — 3,019 — 3,019 Total assets at fair value (2) $ 63,351 $ 3,019 $ — $ 66,370 (2) The above table excludes $23.1 million of cash held in banks. The contractual maturities of our available-for-sale securities on March 31, 2020 and December 31, 2019 were all due within one year . There were no transfers of instruments between Level 1 and 2 during the three months ended March 31, 2020 and the year ended December 31, 2019 . Money market accounts are classified as cash equivalents and U.S. Treasury securities (classified as available-for-sale securities), with maturity dates less than one year, are within short-term investments on our Condensed Consolidated Balance Sheets. Short-term Investments Short-term investments as of December 31, 2019 consisted of the following (in thousands): December 31, 2019 Amortized Gross Gross Fair U.S. Treasury securities $ 3,018 $ 1 $ — $ 3,019 Total $ 3,018 $ 1 $ — $ 3,019 We had no short-term investments as of March 31, 2020.

BALANCE SHEET DETAILS

BALANCE SHEET DETAILS	3 Months Ended
BALANCE SHEET DETAILS	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BALANCE SHEET DETAILS	Cash and Cash Equivalents Our cash and cash equivalent balances were as follows (in thousands): March 31, December 31, Cash $ 15,683 $ 23,127 Money market funds 60,546 63,351 Cash and cash equivalents $ 76,229 $ 86,478 Accounts and other receivables consisted of the following (in thousands): March 31, December 31, Trade accounts receivable $ 5,126 $ 2,972 Other receivables 461 413 Accounts and other receivables $ 5,587 $ 3,385 There was no allowance for credit losses as of March 31, 2020 and December 31, 2019 . Other assets consisted of the following (in thousands): March 31, December 31, Contract assets - long-term $ 6,374 $ 6,928 Right-of-use ("ROU") assets 2,571 2,202 Deferred tax assets 470 470 Other assets and deposits 6,700 7,062 Total other assets $ 16,115 $ 16,662 Other Current Liabilities Other liabilities are as follows (in thousands): March 31, December 31, Accrued legal $ 632 $ 1,077 Lease liabilities - current 1,423 1,150 Other current liabilities 2,118 1,251 Total other current liabilities $ 4,173 $ 3,478

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	3 Months Ended
STOCK-BASED COMPENSATION	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Stock Options and Awards Our equity incentive program is a long-term retention program that is intended to attract, retain, and provide incentives for employees, consultants, officers, and directors and to align stockholder and employee interests. We may grant time-based options, market condition-based options, stock appreciation rights, restricted stock ("RSAs"), restricted stock units (“RSUs”), performance shares, performance units, and other stock-based to employees, officers, directors, and consultants. Under this program, stock options may be granted at prices not less than the fair market value on the date of grant for stock options. These stock options generally vest over four years and expire from seven to ten years from the grant date. In addition to time-based vesting, market condition-based options are subject to a market condition whereby the closing price of our common stock must exceed a certain level for a number of trading days within a specified time frame or the options will be canceled before the expiration of the options. RSAs generally vest over one year . RSUs generally vest over three years . Awards granted other than a stock option or stock appreciation right shall reduce the common stock shares available for grant by 1.75 shares for every share issued. A summary of our equity incentive program is as follows (in thousands): March 31, Common stock shares available for grant 3,080 Stock options outstanding 1,370 RSAs outstanding 71 RSUs outstanding 1,192 Time-Based Stock Options The following summarizes activities for the time-based stock options for the three months ended March 31, 2020 (in thousands except for weighted average exercise price per share and weighted average remaining contractual life data): Number of Shares Weighted Average Weighted Average Aggregate Outstanding at December 31, 2019 967 $ 8.55 5.63 $ 16 Granted 456 $ 7.58 Exercised — $ — Canceled or expired (53 ) $ 9.74 Outstanding as of March 31, 2020 1,370 $ 8.18 6.10 $ — Vested and expected to vest at March 31, 2020 1,130 $ 8.24 6.02 $ — Exercisable at March 31, 2020 192 $ 9.80 4.11 $ — Aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the exercise price of our common stock for the options that were in-the-money. Restricted Stock Units The following summarizes RSU activities for the three months ended March 31, 2020 (in thousands except for weighted average grant date fair value and weighted average remaining contractual life data): Number of Restricted Stock Units Weighted Average Grant Date Fair Value Weighted Average Aggregate Outstanding at December 31, 2019 945 $ 8.81 1.25 $ 7,020 Granted 458 $ 5.92 Released (190 ) $ 9.67 Forfeited (21 ) $ 7.93 Outstanding at March 31, 2020 1,192 $ 7.57 1.49 $ 6,389 Restricted Stock Awards The following summarizes RSA activities for the three months ended March 31, 2020 (in thousands except for weighted average grant date fair value and weighted average remaining recognition period): Number of Restricted Stock Awards Weighted Average Grant Date Fair Value Weighted Average Remaining Recognition Period Outstanding at December 31, 2019 91 $ 7.45 0.45 Granted 12 $ 5.43 Released — $ — Forfeited (32 ) $ 7.27 Outstanding at March 31, 2020 71 $ 7.18 0.21 Employee Stock Purchase Plan Under our 1999 Employee Stock Purchase Plan ("ESPP"), eligible employees may purchase common stock through payroll deductions at a purchase price of 85% of the lower of the fair market value of our common stock at the beginning of the offering period or the purchase date. Participants may not purchase more than 2,000 shares in a six months offering period or purchase stock having a value greater than $25,000 in any calendar year as measured at the beginning of the offering period. A total of 1.0 million shares of common stock has been reserved for issuance under the ESPP. During the three months ended March 31, 2020 , 10,162 shares were purchased under the ESPP. As of March 31, 2020 , 243,275 shares were available for future purchase under the ESPP. Stock-based Compensation Expense The following table summarizes stock-based compensation expenses recognized for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Ended 2020 2019 Stock options $ 255 $ 194 RSUs and RSAs 462 1,888 Employee stock purchase plan 12 21 Total $ 729 $ 2,103 Sales and marketing $ 45 $ 320 Research and development 168 630 General and administrative 516 1,153 Total $ 729 $ 2,103 We use the Black-Scholes-Merton option pricing model for our time-based options, single-option approach to determine the fair value of standard stock options. All share-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods. The determination of the fair value of share-based awards on the date of grant using an option pricing model is affected by our stock price as well as assumptions regarding a number of complex and subjective variables. These variables include actual and projected employee stock option exercise behaviors that impact the expected term, our expected stock price volatility over the term of the awards, risk-free interest rate, and expected dividend. The assumptions used to value options granted under our equity incentive program are as follows: Three Months Ended 2020 2019 Expected life (in years) 4.2 4.5 Volatility 52 % 53 % Interest rate 1.0 % 2.5 % Dividend yield N/A N/A As of March 31, 2020 , there were $9.6 million of unrecognized compensation costs, adjusted for estimated forfeitures, related to non-vested stock options, RSAs and RSUs. This unrecognized compensation cost will be recognized over an estimated weighted-average period of approximately 2.59 years. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures.

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	3 Months Ended
STOCKHOLDERS' EQUITY	Mar. 31, 2020
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY Accumulated Other Comprehensive Income Changes in accumulated other comprehensive income for the three ended March 31, 2020 are as follows (in thousands): Unrealized Gains & Losses on Available for Sale Securities Foreign Currency Items Total Balance as of December 31, 2019 $ 2 $ 122 $ 124 Amounts reclassified from accumulated other comprehensive income (2 ) — (2 ) Balance as of March 31, 2020 $ — $ 122 $ 122 Stock Repurchase Program On November 1, 2007, we announced our Board of Directors (the "Board") authorized the repurchase of up to $50.0 million of our common stock (the “Stock Repurchase Program”). In addition, on October 22, 2014, the Board authorized another $30.0 million under the Stock Repurchase Program. We may repurchase our common stock for cash in the open market in accordance with applicable securities laws. The timing and amount of any stock repurchase will depend on share price, corporate and regulatory requirements, economic and market conditions, and other factors. The stock repurchase authorization has no expiration date, does not require us to repurchase a specific number of shares, and may be modified, suspended, or discontinued at any time. During the first quarter of 2020, we repurchased approximately 2.0 million shares for approximately $12.0 million at an average cost of $5.95 per share leaving approximately $18.7 million available for repurchase under the Stock Repurchase Program. There were no stock repurchases during the three months ended March 31, 2019

INCOME TAXES

INCOME TAXES	3 Months Ended
INCOME TAXES	Mar. 31, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Income tax provisions consisted of the following (in thousands, except for effective tax rate percentage): Three Months Ended 2020 2019 Loss before provision for income taxes $ (4,776 ) $ (10,901 ) Provision for income taxes $ (52 ) $ (115 ) Effective tax rate (1.1 )% (1.1 )% The provision for income tax for the three months ended March 31, 2020 and 2019, respectively, resulted primarily from estimated foreign taxes included in the calculation of the effective tax rate. We continue to carry a full valuation allowance on our federal deferred tax assets. As a result, no benefit for losses generated from our U.S. territory was included in the calculation of the year-to-date effective tax rate. On July 27, 2015, a U.S. Tax Court opinion (Altera Corporation et. al v. Commissioner) concerning the treatment of stock-based compensation expense in an intercompany cost sharing arrangement was issued. In its opinion, the U.S. Tax Court accepted Altera's position of excluding stock-based compensation from its intercompany cost sharing arrangement. On February 19, 2016, the IRS appealed the ruling to the U.S. Court of Appeals for the Ninth Circuit (the "Ninth Circuit"). On July 24, 2018, the Ninth Circuit reversed the 2015 decision of the U.S. Tax Court that had found certain Treasury regulations related to stock-based compensation to be invalid. On August 7, 2018, the Ninth Circuit withdrew its July 24, 2018 opinion to allow a reconstituted panel to confer on the decision. This reconstituted panel reconsidered the validity of the cost sharing regulations at issue. The regulations at issue require related entities to share the cost of employee stock compensation in order for their cost-sharing arrangements to be classified as “qualified cost-sharing arrangements” and to avoid potential IRS adjustment. On June 7, 2019, the reconstituted panel of the Ninth Circuit upheld the 2018 decision of the Ninth Circuit, concluding stock-based compensation must be included in intercompany cost sharing agreements for the agreements to be classified as “qualified cost-sharing arrangements”. On July 22, 2019, Altera filed a petition for an en banc rehearing with the Ninth Circuit which was denied. On February 10, 2020, Altera filed an appeal to the United States Supreme Court (the “Supreme Court”) for review. Although we believe stock-based compensation is not required to be included in its pool of shared costs under its intercompany cost sharing arrangement, we have concluded that it is not more likely than not that Altera will prevail with an appeal to the Supreme Court. As such, we have made corresponding provisions. We will continue to monitor ongoing developments and potential impacts to our condensed consolidated financial statements. On December 22, 2017, the Tax Cuts and Jobs Act (“Tax Act”) was passed into law. Among other changes, the Tax Act reduced the US federal corporate income tax rate from 35% to 21%, required companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred and created new taxes on certain foreign sourced earnings. In addition, the Act introduced the Base Erosion and Anti-Abuse Tax (the “BEAT”), which creates a new tax on certain related-party payments. We concluded that we have not met the threshold requirements of the BEAT. Although the measurement period has closed, further technical guidance related to the Tax Act, including final regulations on a broad range of topics, is expected to be issued. In accordance with ASC 740, we will recognize any effects of the guidance in the period that such guidance is issued. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was passed into law. The CARES Act includes several significant business tax provisions including modification to the taxable income limitation for utilization of net operating losses (“NOLs”) incurred in 2018, 2019 and 2020 and the ability to carry back NOLs from those years for a period of up to five years, an increase to the limitation on deductibility of certain business interest expense, bonus depreciation for purchases of qualified improvement property and special deductions on certain corporate charitable contributions. We analyzed the provisions of the CARES Act and determined there was no effect on our provision for the current period. As of March 31, 2020 , we had unrecognized tax benefits under ASC 740 Income Taxes of approximately $4.8 million and applicable interest of $27,000 . The total amount of unrecognized tax benefits that would affect our effective tax rate, if recognized, is $97,000 . Our policy is to account for interest and penalties related to uncertain tax positions as a component of income tax provision. We do not expect to have any significant changes to unrecognized tax benefits during the next twelve months. As of March 31, 2020 , we had net deferred income tax assets of $0.5 million and deferred income tax liabilities of $0.5 million . Because we have net operating loss and credit carryforwards, there are open statutes of limitations in which federal, state, and foreign taxing authorities may examine our tax returns for all years from 2000 through the current period. We maintain a valuation allowance of $27.9 million against certain of our deferred tax assets, including all federal, state, and certain foreign deferred tax assets as a result of uncertainties regarding the realization of the asset balance due to historical losses, the variability of operating results, and uncertainty regarding near term projected results. In the event that we determine the deferred tax assets are realizable based on our assessment of relevant factors, an adjustment to the valuation allowance may increase income in the period such determination is made. The valuation allowance does not impact our ability to utilize the underlying net operating loss carryforwards.

NET INCOME (LOSS) PER SHARE

NET INCOME (LOSS) PER SHARE	3 Months Ended
NET INCOME (LOSS) PER SHARE	Mar. 31, 2020
Earnings Per Share [Abstract]
NET INCOME (LOSS) PER SHARE	NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is computed using the weighted average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed using the weighted average number of shares of common stock, adjusted for any dilutive effect of potential common stock. Potential common stock, computed using the treasury stock method, includes stock options, RSUs, RSAs and ESPP. The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended 2020 2019 Numerator: Net loss $ (4,828 ) $ (11,016 ) Denominator: Weighted-average common stock outstanding, basic 31,006 31,089 Dilutive effect of potential common shares: Stock options, RSUs, RSA and ESPP — — Total shares, diluted 31,006 31,089 Basic net loss per share $ (0.16 ) $ (0.35 ) Diluted net loss per share $ (0.16 ) $ (0.35 ) For the three months ended March 31, 2020 , approximately 1.4 million stock options and 1.3 million RSUs and RSAs were excluded from computation of diluted net loss per share because their effect would have been anti-dilutive. For the three months ended March 31, 2019 , approximately 2.3 million stock options and 0.9 million RSUs and RSAs were excluded from computation of diluted net loss per share because their effect would have been anti-dilutive.

LEASES

LEASES	3 Months Ended
LEASES	Mar. 31, 2020
Leases [Abstract]
LEASES	LEASES We lease all of our office space pursuant to lease arrangements, each of which have expiration dates on or before February 29, 2024. We recognize lease expense on a straight-line basis over the lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet. We combine lease and non-lease components for new and reassessed leases. We apply discount rates to operating leases using a portfolio approach. On January 31, 2020, we entered into an agreement to lease approximately 5,000 square feet of office space in San Francisco, California. This facility will be used for administrative and headquarter functions. The lease commenced in the first quarter of 2020 and expires in 2022. During the three months ended March 31, 2020, we recorded a lease liability of $0.6 million , which represents the present value of the lease payments using an estimated incremental borrowing rate of 3.50% . We also recognized lease right-of-use assets ("ROU") of $0.6 million which represents our right to use an underlying asset for the lease term. Below is a summary of our ROU assets and lease liabilities as of March 31, 2020 and December 31, 2019, respectively (in thousands): Balance Sheets Classification March 31, 2020 December 31, 2019 Assets Right-of-use assets Other assets $ 2,571 $ 2,202 Liabilities Operating lease liabilities - current Other current liabilities 1,423 1,150 Operating lease liabilities - long-term Other long-term liabilities 2,652 2,664 Total lease liabilities $ 4,075 $ 3,814 The table below provides supplemental information related to operating leases during the three months ended as of March 31, 2020 (in thousands except for lease term): Cash paid within operating cash flow $ 349 Weighted average lease terms (in years) 2.94 In the fourth quarter 2019, we announced our decision to exit the San Jose California facility (“SJ Facility”) by March 31, 2020. We accelerated the amortization of our SJ Facility leasehold improvements over their remaining estimated life. As of March 31, 2020, the SJ Facility leasehold improvements were fully amortized. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Operating lease expenses are recognized on a straight-line basis over the lease term. During the three months ended March 31, 2020 , and 2019, our operating lease expenses are as follows: Three Months Ended March 31, 2020 2019 Operating lease costs $ 273 $ 265 Minimum future lease payment obligations as of March 31, 2020 are as follows (in thousands): For the Years Ending December 31, Remainder of 2020 1,186 2021 1,499 2022 1,197 2023 457 2024 24 Total $ 4,363 On March 12, 2020, we entered into a sublease agreement with Neato Robotics, Inc. ("Neato") for the San Jose California Facility ("SJ Facility"). The term of the sublease agreement commences upon the later of (i) May 1, 2020 and (ii) fifteen ( 15 ) days following our landlord’s consent to the sublease (the "Commencement Date"). Effective May 1, 2020, we entered into an amendment to the sublease agreement with Neato, pursuant to which the Commencement Date occurs upon the earlier of (i) the date Neato commences conduct of business operations from the SJ Facility or (ii) the date that is fifteen ( 15 ) days after delivery of the SJ Facility to Neato and the lifting of the Order of the Health Officer of the County of Santa Clara, dated March 16, 2020, and Executive Order N-33-20 issued by the Executive Department, State of California, dated March 19, 2020, and any extensions thereof, or similar directives requiring residents to shelter in place or businesses that include businesses of ours or Neato, to shut down or work remotely, issued by applicable municipal, state, and federal authorities having jurisdiction over the SJ Facility in connection with the management of the COVID-19 pandemic. However, if we do not deliver the premises to Neato by the Commencement Date, then the sublease would commence 15 days after we deliver the premises to Neato. Subject to any delays related to the COVID-19 pandemic, this sublease is expected to commence in the second quarter of 2020 and ends on April 30, 2023 which is the lease termination date of the original SJ Facility lease. This lease will be accounted for as an operating lease as we are not relieved of the primary obligation under the original lease. Sublease income we expect to receive under the term of the sublease agreement are as follows (in thousands): For the Years Ending December 31, Remainder of 2020 $ 599 2021 1,046 2022 1,077 2023 363 Total $ 3,085

CONTINGENCIES

CONTINGENCIES	3 Months Ended
CONTINGENCIES	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	CONTINGENCIES From time to time, we receive claims from third parties asserting that our technologies, or those of our licensees, infringe on the other parties’ IP rights. Management believes that these claims are without merit. Additionally, periodically, we are involved in routine legal matters and contractual disputes incidental to our normal operations. In management’s opinion, the resolution of such matters will not have a material adverse effect on our consolidated financial condition, results of operations, or liquidity. In the normal course of business, we provide indemnification of varying scope to customers, most commonly to licensees in connection with licensing arrangements that include our IP, although these provisions can cover additional matters. Historically, costs related to these guarantees have not been significant, and we are unable to estimate the maximum potential impact of these guarantees on our future results of operations. On April 28, 2017, Immersion and Immersion Software Ireland Limited (collectively, “Immersion”) received a letter from Samsung Electronics Co. (“Samsung”) requesting that we reimburse Samsung with respect to withholding tax and penalties imposed on Samsung by the Korean tax authorities following an investigation where the tax authority determined that Samsung failed to withhold taxes on Samsung’s royalty payments to Immersion Software Ireland from 2012 to 2016. On July 12, 2017, on behalf of Samsung, Immersion filed an appeal with the Korea Tax Tribunal regarding their findings with respect to the withholding taxes and penalties. On October 18, 2018, the Korea Tax Tribunal held a hearing and on November 19, 2018, the Korea Tax Tribunal issued its ruling in which it decided not to accept our arguments with respect to the Korean tax authorities’ assessment of withholding tax and penalties imposed on Samsung. On behalf of Samsung, we filed an appeal with the Korea Administrative Court on February 15, 2019. The first hearing occurred on June 27, 2019. A second hearing occurred on August 29, 2019. A third hearing occurred on October 31, 2019. A fourth hearing occurred on December 19, 2019. A fifth hearing occurred on April 2, 2020. A sixth hearing is scheduled for May 14, 2020. On September 29, 2017, Samsung filed an arbitration demand with the International Chamber of Commerce against Immersion demanding that we reimburse Samsung for the imposed tax and penalties that Samsung paid to the Korean tax authorities. On March 27, 2019, we received the final award. The award ordered Immersion to pay Samsung KRW 7,841,324,165 ( $6.9 million ) which Immersion paid on April 22, 2019, and recorded in Other Assets. The award also denied Samsung’s claim for interest from and after May 2, 2017, and ordered Immersion to pay Samsung’s cost of the arbitration in the amount of approximately $871,454 . We believe that there are valid defenses to all of the claims from the Korean tax authorities. We intend to vigorously defend against the claims from the Korean tax authorities. We expect to be reimbursed by Samsung to the extent we ultimately prevail in the appeal in the Korea courts. At March 31, 2019, $6.9 million was recorded as a deposit included in Other assets on our Condensed Consolidated Balance Sheets. In the event that we do not ultimately prevail in our appeal in the Korean courts, the deposit included in Other assets would be recorded as additional income tax expense on our Condensed Consolidated Statement of Operations and Comprehensive Income (Loss), in the period in which we do not ultimately prevail. On October 16, 2017, we received a letter from LG Electronics Inc. (“LGE”) requesting that we reimburse LGE with respect to withholding tax imposed on LGE by the Korean tax authorities following an investigation where the tax authority determined that LGE failed to withhold on LGE’s royalty payments to Immersion Software Ireland from 2012 to 2014. Pursuant to an agreement reached with LGE, on April 8, 2020, we provided a provisional deposit to LGE in the amount of KRW 5,916,845,454 (approximately $5.0 million ) representing the amount of such withholding tax that was imposed on LGE, which provisional deposit would be returned to us to the extent we ultimately prevail in the appeal in the Korea courts. In the second quarter of 2020, we will record this deposit as Other Assets on our Condensed Consolidated Balance Sheets. In the event that we do not ultimately prevail in our appeal in the Korean courts, the deposit included in Other assets would be recorded as additional income tax expense on our Condensed Consolidated Statement of Operations and Comprehensive Income (Loss), in the period in which we do not ultimately prevail. On November 3, 2017, on behalf of LGE, we filed an appeal with the Korea Tax Tribunal regarding their findings with respect to the withholding taxes. The Korea Tax Tribunal hearing took place on March 5, 2019. On March 19, 2019, the Korea Tax Tribunal issued its ruling in which it decided not to accept Immersion’s arguments with respect to the Korean tax authorities’ assessment of withholding tax and penalties imposed on LGE. On behalf of LGE, we filed an appeal with the Korea Administrative Court on June 10, 2019. The first hearing occurred on October 15, 2019. A second hearing occurred on December 19, 2019. A third hearing occurred on February 13, 2020. A fourth hearing is scheduled for May 26, 2020. We believe that there are valid defenses to the claims raised by the Korean tax authorities and that LGE’s claims are without merit. We intend to vigorously defend ourselves against these claims. In the event that we do not ultimately prevail in our appeal in the Korean courts, any payments to LGE with respect to withholding tax imposed on LGE by the Korean tax authorities as described in the previous paragraph would be recorded as additional income tax expense on the Condensed Consolidated Statement of Operations and Comprehensive Income (Loss), in the period in which we do not ultimately prevail.

SIGNIFICANT ACCOUNTING POLICI_2

SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
SIGNIFICANT ACCOUNTING POLICIES (Policies)	Mar. 31, 2020
Accounting Policies [Abstract]
Description of Business	Description of Business Immersion Corporation (the "Company", "Immersion", "we" or "us")) was incorporated in 1993 in California and reincorporated in Delaware in 1999. We focus on the creation, design, development, and licensing of innovative haptic technologies that allow people to use their sense of touch more fully as they engage with products and experience the digital world around them. We have adopted a business model under which it provides advanced tactile software, related tools, technical assistance designed to help integrate our patented technology into our customers’ products or enhance the functionality of our patented technology to certain customers, and offers licenses to our patented technology to other customers.
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of Immersion Corporation and its wholly owned subsidiaries: Immersion Canada Corporation; Immersion International, LLC; Immersion Medical, Inc.; Immersion Japan K.K.; Immersion Ltd.; Immersion Software Ireland Ltd.; Haptify, Inc.; Immersion (Shanghai) Science & Technology Company, Ltd.; and Immersion Technology International Ltd. All intercompany accounts, transactions, and balances have been eliminated in consolidation. The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all information and footnotes necessary for a complete presentation of the financial position, results of operations, and cash flows, in conformity with U.S. GAAP and should be read in conjunction with our audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2019 . In the opinion of management, all adjustments consisting of only normal and recurring items necessary for the fair presentation of the financial position and results of operations for the interim periods presented have been included.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements and related disclosures requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include valuation of income taxes including uncertain tax provisions, and revenue recognition. Actual results may differ materially from those estimates which were made based on the best information known to management at that time.
Segment Information	Segment Information We develop, license, and support a wide range of software and IP that more fully engage users’ sense of touch when operating digital devices. We focus on the following target application areas: mobile devices, wearables, consumer, mobile entertainment and other content; console gaming; automotive; medical; and commercial. We manage these application areas in one operating and reporting segment with only one set of management, development, and administrative personnel. Our chief operating decision maker (“CODM”) is the Chief Executive Officer. The CODM approves budgets and allocates resources to and assesses the performance of our business using information about our revenue and operating loss. There is only one segment that is reported to management.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). This guidance requires financial assets measured at amortized cost to be presented at the net amount expected to be collected based on historical events, current conditions and forecast information. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2019 and early adoption is permitted. We adopted ASU 2016-13 as of January 1, 2020. The adoption of this new accounting standard did not have a material impact on our condensed consolidated financial statements. Recent Accounting Guidance Not Yet Adopted In December 2019, the FASB issued Accounting Standard Update No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which enhances and simplifies various aspects of the income tax accounting guidance, including requirements such as tax basis step-up in goodwill obtained in a transaction that is not a business combination, ownership changes in investments, and interim-period accounting for enacted changes in tax law. The amendment will be effective for public companies with fiscal years beginning after December 15, 2020; early adoption is permitted. We are evaluating the impact of this amendment on our condensed consolidated financial statements.
Revenue Recognition Accounting Policy	Revenue Recognition Accounting Policy Our revenue is primarily derived from fixed fee license agreements and per-unit royalty agreements, along with less significant revenue earned from development, services and other revenue. Fixed fee license revenue We are required to recognize revenue from a fixed fee license agreement when we have satisfied our performance obligations, which typically occurs upon the transfer of rights to our technology upon the execution of the license agreement. However, in certain contracts, we grant a license to our existing patent portfolio at the inception of the license agreement as well as rights to the portfolio as it evolves throughout the contract term. For such arrangements, we have concluded that there are two separate performance obligations: •Performance Obligation A: to transfer rights to our patent portfolio as it exists when the contract is executed; •Performance Obligation B: to transfer rights to our patent portfolio as it evolves over the term of the contract, including access to new patent applications that the licensee can benefit from over the term of the contract. If a fixed fee license agreement contains only Performance Obligation A, we will recognize most or all of the revenue from the agreement at the inception of the contract. For fixed fee license agreements that contain both Performance Obligation A and B, we will allocate the transaction price based on the standalone price for each of the two performance obligations. We use a number of factors primarily related to the attributes of our patent portfolio to estimate standalone prices related to Performance Obligation A and B. Once the transaction price is allocated, the portion of the transaction price allocable to Performance Obligation A will be recognized in the quarter the license agreement is signed and the customer can benefit from rights provided in the contract, and the portion allocable to Performance Obligation B will be recognized on a straight-line basis over the contract term. For such contracts, a contract liability account will be established and included within "deferred revenue" on the condensed consolidated balance sheet. As the rights and obligations in a contract are interdependent, contract assets and contract liabilities that arise in the same contract are presented on a net basis. Some of our license agreements contain fixed fees related to past infringements. Such fixed fees are recognized as revenue or recorded as a deduction to our operating expense in the quarter the license agreement is signed. Payments for fixed fee license contracts typically are due in full within 30 - 45 days from execution of the contract. From time to time, we enter into a fixed fee license contract with payments due in a number of installments payable throughout the contract term. In such cases, we will determine if a significant financing component exists and if it does, we will recognize more or less revenue and corresponding interest expense or income, as appropriate. Per-unit Royalty revenue ASC 606 requires an entity to record per-unit royalty revenue in the same period in which the licensee’s underlying sales occur. As we generally do not receive the per-unit licensee royalty reports for sales during a given quarter within the time frame that allows us to adequately review the reports and include the actual amounts in our quarterly results for such quarter, we accrue the related revenue based on estimates of our licensees’ underlying sales, subject to certain constraints on our ability to estimate such amounts. We develop such estimates based on a combination of available data including, but not limited to, approved customer forecasts, a lookback at historical royalty reporting for each of our customers, and industry information available for the licensed products. As a result of accruing per-unit royalty revenue for the quarter based on such estimates, adjustments will be required in the following quarter to true up revenue to the actual amounts reported by our licensees. During the three months ended March 31, 2020, we recorded a $0.1 million adjustment to decrease royalty revenue. This adjustment represents the difference between the actual per-unit royalty revenue for the three months ended December 31, 2019 as reported by our licensees during the three months ended March 31, 2020 and the estimated per-unit royalty revenue for the three months ended December 31, 2019 that we reported during the quarter. Certain of our per-unit royalty agreements contains a minimum royalty provision which sets forth minimum amounts to be received by us during the contract term. Under ASC 606, minimum royalties are considered a fixed transaction price to which we will have an unconditional right once all other performance obligations, if any, are satisfied. We recognize all minimum royalties as revenue at the inception of the license agreement, or in the period in which all remaining revenue recognition criteria have been met. We account for the unbilled minimum royalties as contract assets on a contract basis on our Condensed Consolidated Balance Sheets, and the balance of such contract assets will be reduced by the actual royalties to be reported by the licensee during the contract term until fully utilized, after which point any excess per-unit royalties reported will be recognized as revenue. As the rights and obligations in a contract are interdependent, contract assets and contract liabilities that arise in the same contract are presented on a net basis. Payments of per-unit royalties typically are due within 30 to 60 days from the end of the calendar quarter in which the underlying sales took place. Development, services, and other revenue As the performance obligation related to our development, service and other revenue is satisfied over a period of time, we recognize such revenue evenly over the period of performance obligation, which is generally consistent with the contractual term.

REVENUE RECOGNITION (Tables)

REVENUE RECOGNITION (Tables)	3 Months Ended
REVENUE RECOGNITION (Tables)	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregated revenue	The following table presents the disaggregation of our revenue for the three months ended March 31, 2019 and 2020 (in thousands). Three Months Ended March 31, 2020 2019 Fixed fee license revenue $ 1,287 $ 1,740 Per-Unit royalty revenue 4,895 3,307 Total royalty and license revenue 6,182 5,047 Development, services, and other revenue 75 75 Total revenues $ 6,257 $ 5,122

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
FAIR VALUE MEASUREMENTS (Tables)	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Schedule of financial instruments measured at fair value on recurring basis	Financial instruments measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 are classified based on the valuation technique in the table below (in thousands): March 31, 2020 Fair Value Measurements Using Quoted Prices Significant Significant Total Assets: Money market accounts $ 60,546 $ — $ — $ 60,546 Total assets at fair value (1) $ 60,546 $ — $ — $ 60,546 (1) The above table excludes $15.7 million of cash held in banks. December 31, 2019 Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Significant Total Assets: Money market accounts $ 63,351 $ — $ — $ 63,351 U.S. Treasury securities — 3,019 — 3,019 Total assets at fair value (2) $ 63,351 $ 3,019 $ — $ 66,370 (2) The above table excludes $23.1 million of cash held in banks.
Schedule of short-term investments	Short-term investments as of December 31, 2019 consisted of the following (in thousands): December 31, 2019 Amortized Gross Gross Fair U.S. Treasury securities $ 3,018 $ 1 $ — $ 3,019 Total $ 3,018 $ 1 $ — $ 3,019

BALANCE SHEET DETAILS (Tables)

BALANCE SHEET DETAILS (Tables)	3 Months Ended
BALANCE SHEET DETAILS (Tables)	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of cash and cash equivalents	cash and cash equivalent balances were as follows (in thousands): March 31, December 31, Cash $ 15,683 $ 23,127 Money market funds 60,546 63,351 Cash and cash equivalents $ 76,229 $ 86,478
Schedule of accounts and other receivables	Accounts and other receivables consisted of the following (in thousands): March 31, December 31, Trade accounts receivable $ 5,126 $ 2,972 Other receivables 461 413 Accounts and other receivables $ 5,587 $ 3,385
Schedule of other assets, net	Other assets consisted of the following (in thousands): March 31, December 31, Contract assets - long-term $ 6,374 $ 6,928 Right-of-use ("ROU") assets 2,571 2,202 Deferred tax assets 470 470 Other assets and deposits 6,700 7,062 Total other assets $ 16,115 $ 16,662
Components of other current liabilities	Other liabilities are as follows (in thousands): March 31, December 31, Accrued legal $ 632 $ 1,077 Lease liabilities - current 1,423 1,150 Other current liabilities 2,118 1,251 Total other current liabilities $ 4,173 $ 3,478

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	3 Months Ended
STOCK-BASED COMPENSATION (Tables)	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of equity incentive program	A summary of our equity incentive program is as follows (in thousands): March 31, Common stock shares available for grant 3,080 Stock options outstanding 1,370 RSAs outstanding 71 RSUs outstanding 1,192
Summary of time-based stock options	The following summarizes activities for the time-based stock options for the three months ended March 31, 2020 (in thousands except for weighted average exercise price per share and weighted average remaining contractual life data): Number of Shares Weighted Average Weighted Average Aggregate Outstanding at December 31, 2019 967 $ 8.55 5.63 $ 16 Granted 456 $ 7.58 Exercised — $ — Canceled or expired (53 ) $ 9.74 Outstanding as of March 31, 2020 1,370 $ 8.18 6.10 $ — Vested and expected to vest at March 31, 2020 1,130 $ 8.24 6.02 $ — Exercisable at March 31, 2020 192 $ 9.80 4.11 $ —
Summary of restricted stock units activities	The following summarizes RSU activities for the three months ended March 31, 2020 (in thousands except for weighted average grant date fair value and weighted average remaining contractual life data): Number of Restricted Stock Units Weighted Average Grant Date Fair Value Weighted Average Aggregate Outstanding at December 31, 2019 945 $ 8.81 1.25 $ 7,020 Granted 458 $ 5.92 Released (190 ) $ 9.67 Forfeited (21 ) $ 7.93 Outstanding at March 31, 2020 1,192 $ 7.57 1.49 $ 6,389
Summary of restricted stock awards activities	The following summarizes RSA activities for the three months ended March 31, 2020 (in thousands except for weighted average grant date fair value and weighted average remaining recognition period): Number of Restricted Stock Awards Weighted Average Grant Date Fair Value Weighted Average Remaining Recognition Period Outstanding at December 31, 2019 91 $ 7.45 0.45 Granted 12 $ 5.43 Released — $ — Forfeited (32 ) $ 7.27 Outstanding at March 31, 2020 71 $ 7.18 0.21
Summary of stock-based compensation expenses	The following table summarizes stock-based compensation expenses recognized for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Ended 2020 2019 Stock options $ 255 $ 194 RSUs and RSAs 462 1,888 Employee stock purchase plan 12 21 Total $ 729 $ 2,103 Sales and marketing $ 45 $ 320 Research and development 168 630 General and administrative 516 1,153 Total $ 729 $ 2,103
Summary of assumptions used to value options granted	The assumptions used to value options granted under our equity incentive program are as follows: Three Months Ended 2020 2019 Expected life (in years) 4.2 4.5 Volatility 52 % 53 % Interest rate 1.0 % 2.5 % Dividend yield N/A N/A

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	3 Months Ended
STOCKHOLDERS' EQUITY (Tables)	Mar. 31, 2020
Equity [Abstract]
Changes in accumulated other comprehensive income	Changes in accumulated other comprehensive income for the three ended March 31, 2020 are as follows (in thousands): Unrealized Gains & Losses on Available for Sale Securities Foreign Currency Items Total Balance as of December 31, 2019 $ 2 $ 122 $ 124 Amounts reclassified from accumulated other comprehensive income (2 ) — (2 ) Balance as of March 31, 2020 $ — $ 122 $ 122

INCOME TAXES (Tables)

INCOME TAXES (Tables)	3 Months Ended
INCOME TAXES (Tables)	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Schedule of income tax provisions	Income tax provisions consisted of the following (in thousands, except for effective tax rate percentage): Three Months Ended 2020 2019 Loss before provision for income taxes $ (4,776 ) $ (10,901 ) Provision for income taxes $ (52 ) $ (115 ) Effective tax rate (1.1 )% (1.1 )%

NET INCOME (LOSS) PER SHARE (Ta

NET INCOME (LOSS) PER SHARE (Tables)	3 Months Ended
NET INCOME (LOSS) PER SHARE (Tables)	Mar. 31, 2020
Earnings Per Share [Abstract]
Reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share	The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended 2020 2019 Numerator: Net loss $ (4,828 ) $ (11,016 ) Denominator: Weighted-average common stock outstanding, basic 31,006 31,089 Dilutive effect of potential common shares: Stock options, RSUs, RSA and ESPP — — Total shares, diluted 31,006 31,089 Basic net loss per share $ (0.16 ) $ (0.35 ) Diluted net loss per share $ (0.16 ) $ (0.35 )

LEASES (Tables)

LEASES (Tables)	3 Months Ended
LEASES (Tables)	Mar. 31, 2020
Leases [Abstract]
Summary of ROU assets and lease liabilities	Below is a summary of our ROU assets and lease liabilities as of March 31, 2020 and December 31, 2019, respectively (in thousands): Balance Sheets Classification March 31, 2020 December 31, 2019 Assets Right-of-use assets Other assets $ 2,571 $ 2,202 Liabilities Operating lease liabilities - current Other current liabilities 1,423 1,150 Operating lease liabilities - long-term Other long-term liabilities 2,652 2,664 Total lease liabilities $ 4,075 $ 3,814
Schedule of supplemental information related to operating leases and expenses	The table below provides supplemental information related to operating leases during the three months ended as of March 31, 2020 (in thousands except for lease term): Cash paid within operating cash flow $ 349 Weighted average lease terms (in years) 2.94 three months ended March 31, 2020 , and 2019, our operating lease expenses are as follows: Three Months Ended March 31, 2020 2019 Operating lease costs $ 273 $ 265
Schedule of minimum future lease payment obligations	Minimum future lease payment obligations as of March 31, 2020 are as follows (in thousands): For the Years Ending December 31, Remainder of 2020 1,186 2021 1,499 2022 1,197 2023 457 2024 24 Total $ 4,363
Schedule of sublease income expected to be received	Sublease income we expect to receive under the term of the sublease agreement are as follows (in thousands): For the Years Ending December 31, Remainder of 2020 $ 599 2021 1,046 2022 1,077 2023 363 Total $ 3,085

SIGNIFICANT ACCOUNTING POLICI_3

SIGNIFICANT ACCOUNTING POLICIES (Details)	3 Months Ended
SIGNIFICANT ACCOUNTING POLICIES (Details)	Mar. 31, 2020Segment
Accounting Policies [Abstract]
Number of reporting segments	1
Number of operating segments	1

REVENUE RECOGNITION - NARRATIVE

REVENUE RECOGNITION - NARRATIVE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Decrease in royalty revenue recognized true-ups	$ 100
Contract with customer, asset, current	8,300	$ 13,100
Contract assets - long-term	6,374	$ 6,928
Decrease in contract with customer, asset	$ 5,400

REVENUE RECOGNITION - DISAGGREG

REVENUE RECOGNITION - DISAGGREGATED REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 6,257	$ 5,122
Fixed fee license revenue
Disaggregation of Revenue [Line Items]
Revenues	1,287	1,740
Per-Unit royalty revenue
Disaggregation of Revenue [Line Items]
Revenues	4,895	3,307
Total royalty and license revenue
Disaggregation of Revenue [Line Items]
Revenues	6,182	5,047
Development, services, and other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 75	$ 75

REVENUE RECOGNITION - CONTRACTE

REVENUE RECOGNITION - CONTRACTED REVENUE (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 29.3	$ 30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 13.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	3 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 15.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period

FAIR VALUE MEASUREMENTS - SCHED

FAIR VALUE MEASUREMENTS - SCHEDULE OF FINANCIAL INSTRUMENTS MEASURED AT FAIR VALUE ON RECURRING BASIS (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 0	$ 3,019,000
Cash held in banks	15,683,000	23,127,000
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		3,019,000
Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	60,546,000	66,370,000
Fair value, measurements, recurring \| U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		3,019,000
Fair value, measurements, recurring \| Money market accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market accounts	60,546,000	63,351,000
Fair value, measurements, recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	60,546,000	63,351,000
Fair value, measurements, recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		0
Fair value, measurements, recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Money market accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market accounts	60,546,000	63,351,000
Fair value, measurements, recurring \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	0	3,019,000
Fair value, measurements, recurring \| Significant Other Observable Inputs (Level 2) \| U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		3,019,000
Fair value, measurements, recurring \| Significant Other Observable Inputs (Level 2) \| Money market accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market accounts	0	0
Fair value, measurements, recurring \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	0	0
Fair value, measurements, recurring \| Significant Unobservable Inputs (Level 3) \| U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		0
Fair value, measurements, recurring \| Significant Unobservable Inputs (Level 3) \| Money market accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market accounts	$ 0	$ 0

FAIR VALUE MEASUREMENTS - NARRA

FAIR VALUE MEASUREMENTS - NARRATIVE (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Period for contractual maturities of the Company's available-for-sale securities	1 year	1 year
Short-term investments	$ 0	$ 3,019,000

FAIR VALUE MEASUREMENTS - SCH_2

FAIR VALUE MEASUREMENTS - SCHEDULE OF SHORT-TERM INVESTMENTS (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 3,018,000
Gross Unrealized Holding Gains		1,000
Gross Unrealized Holding Losses		0
Fair Value	$ 0	3,019,000
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		3,018,000
Gross Unrealized Holding Gains		1,000
Gross Unrealized Holding Losses		0
Fair Value		$ 3,019,000

BALANCE SHEET DETAILS - Cash an

BALANCE SHEET DETAILS - Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Cash and cash equivalents:
Cash	$ 15,683	$ 23,127
Money market funds	60,546	63,351
Cash and cash equivalents	$ 76,229	$ 86,478

BALANCE SHEET DETAILS - Account

BALANCE SHEET DETAILS - Accounts and Other Receivables (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Trade accounts receivable	$ 5,126,000	$ 2,972,000
Other receivables	461,000	413,000
Accounts and other receivables	5,587,000	3,385,000
Estimated allowance for doubtful accounts	$ 0	$ 0

BALANCE SHEET DETAILS - Other A

BALANCE SHEET DETAILS - Other Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Assets, Net [Abstract]
Contract assets - long-term	$ 6,374	$ 6,928
Right-of-use (ROU) assets	2,571	2,202
Deferred tax assets	470	470
Other assets and deposits	6,700	7,062
Total other assets	$ 16,115	$ 16,662

BALANCE SHEET DETAILS - Other C

BALANCE SHEET DETAILS - Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Liabilities, Current [Abstract]
Accrued legal	$ 632	$ 1,077
Lease liabilities - current	1,423	1,150
Other current liabilities	2,118	1,251
Total other current liabilities	$ 4,173	$ 3,478

STOCK-BASED COMPENSATION - NARR

STOCK-BASED COMPENSATION - NARRATIVE (Details)	3 Months Ended
STOCK-BASED COMPENSATION - NARRATIVE (Details)	Mar. 31, 2020USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of available shares consumed for each restricted stock and restricted stock units issued	1.75
Unrecognized compensation cost \| $	$ 9,600,000
Unrecognized compensation cost, recognized over an estimated weighted-average period	2 years 7 months 2 days
Stock options outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based payment award vesting period	4 years
Stock options outstanding \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based payment award expiration period	7 years
Stock options outstanding \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based payment award expiration period	10 years
RSAs outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based payment award vesting period	1 year
RSUs outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based payment award vesting period	3 years
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value on the purchase date	85.00%
Maximum number of shares per employee (in shares)	2,000
Employee stock purchase plan offering period	6 months
Maximum value of shares per employee \| $	$ 25,000
Common stock reserved for issuance (in shares)	1,000,000
Purchases under ESPP (in shares)	10,162
Shares available for purchase (in shares)	243,275

STOCK-BASED COMPENSATION - SUMM

STOCK-BASED COMPENSATION - SUMMARY OF EQUITY INCENTIVE PROGRAM (Details) - shares shares in Thousands	Mar. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares available for grant (in shares)	3,080
Stock options outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Standard and market condition-based stock options outstanding (in shares)	1,370
RSAs outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock outstanding (in shares)	71	91
RSUs outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock outstanding (in shares)	1,192	945

STOCK-BASED COMPENSATION - SU_2

STOCK-BASED COMPENSATION - SUMMARY OF TIME-BASED STOCK OPTIONS (Details) - Time-based stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Number of Shares Underlying Stock Options
Beginning outstanding balance (in shares)	967
Granted (in shares)	456
Exercised (in shares)	0
Canceled or expired (in shares)	(53)
Ending outstanding balance (in shares)	1,370	967
Number of shares underlying stock options, Vested and expected to vest (in shares)	1,130
Number of shares underlying stock options, Exercisable (in shares)	192
Weighted Average Exercise Price Per Share
Beginning outstanding balance (in dollars per share)	$ 8.55
Granted (in dollars per share)	7.58
Exercised (in dollars per share)	0
Canceled or expired (in dollars per share)	9.74
Ending outstanding balance (in dollars per share)	8.18	$ 8.55
Weighted average exercise price, Vested and expected to vest (in dollars per share)	8.24
Weighted average exercise price, Exercisable (in dollars per share)	$ 9.80
Weighted average remaining contractual life, Outstanding	6 years 1 month 6 days	5 years 7 months 17 days
Weighted average remaining contractual life, Vested and expected to vest	6 years 7 days
Weighted average remaining contractual life, Exercisable	4 years 1 month 9 days
Aggregate intrinsic value, Outstanding	$ 0	$ 16
Aggregate intrinsic value, Vested and expected to vest	0
Aggregate intrinsic value, Exercisable	$ 0

STOCK-BASED COMPENSATION - SU_3

STOCK-BASED COMPENSATION - SUMMARY OF RESTRICTED STOCK UNITS AND RESTRICTED STOCK AWARDS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
RSUs outstanding
Number of Restricted Stock Units / Awards
Beginning outstanding balance (in shares)	945
Granted (in shares)	458
Released (in shares)	(190)
Forfeited (in shares)	(21)
Ending outstanding balance (in shares)	1,192	945
Weighted Average Grant Date Fair Value
Beginning outstanding balance (in dollars per share)	$ 8.81
Granted (in dollars per share)	5.92
Released (in dollars per share)	9.67
Forfeited (in dollars per share)	7.93
Ending outstanding balance (in dollars per share)	$ 7.57	$ 8.81
Weighted average remaining contractual life / recognition period, Outstanding	1 year 5 months 26 days	1 year 3 months
Aggregate intrinsic value, Outstanding	$ 6,389	$ 7,020
RSAs outstanding
Number of Restricted Stock Units / Awards
Beginning outstanding balance (in shares)	91
Granted (in shares)	12
Released (in shares)	0
Forfeited (in shares)	(32)
Ending outstanding balance (in shares)	71	91
Weighted Average Grant Date Fair Value
Beginning outstanding balance (in dollars per share)	$ 7.45
Granted (in dollars per share)	5.43
Released (in dollars per share)	0
Forfeited (in dollars per share)	7.27
Ending outstanding balance (in dollars per share)	$ 7.18	$ 7.45
Weighted average remaining contractual life / recognition period, Outstanding	2 months 15 days	5 months 12 days

STOCK-BASED COMPENSATION - SU_4

STOCK-BASED COMPENSATION - SUMMARY OF STOCK-BASED COMPENSATION EXPENSES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	$ 729	$ 2,103
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	45	320
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	168	630
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	516	1,153
Standard and market condition-based stock options outstanding
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	255	194
RSUs and RSAs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	462	1,888
Employee stock purchase plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	$ 12	$ 21

STOCK-BASED COMPENSATION - SU_5

STOCK-BASED COMPENSATION - SUMMARY OF ASSUMPTIONS USED TO VALUE OPTIONS GRANTED (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Payment Arrangement [Abstract]
Expected life (in years)	4 years 2 months 12 days	4 years 6 months
Volatility	52.00%	53.00%
Interest rate	1.00%	2.50%

STOCKHOLDERS' EQUITY - CHANGES

STOCKHOLDERS' EQUITY - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	$ 124
Amounts reclassified from accumulated other comprehensive income	(2)
Ending balance	122
Unrealized Gains & Losses on Available for Sale Securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	2
Amounts reclassified from accumulated other comprehensive income	(2)
Ending balance	0
Foreign Currency Items
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	122
Amounts reclassified from accumulated other comprehensive income	0
Ending balance	$ 122

STOCKHOLDERS' EQUITY - NARRATIV

STOCKHOLDERS' EQUITY - NARRATIVE (Details) - USD ($)	3 Months Ended
STOCKHOLDERS' EQUITY - NARRATIVE (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019	Oct. 22, 2014	Nov. 01, 2007
Equity, Class of Treasury Stock [Line Items]
Repurchased shares, value	$ 11,975,000
Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				$ 50,000,000
Stock repurchase program, additional authorized amount			$ 30,000,000
Repurchased shares (in shares)	2,000,000	0
Repurchased shares, value	$ 12,000,000
Stock repurchase program, average cost (in dollars per share)	$ 5.95
Stock repurchase program, remaining available repurchase amount	$ 18,700,000

INCOME TAXES - SCHEDULE OF INCO

INCOME TAXES - SCHEDULE OF INCOME TAX PROVISIONS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Loss before provision for income taxes	$ (4,776)	$ (10,901)
Provision for income taxes	$ (52)	$ (115)
Effective tax rate	(1.10%)	(1.10%)

INCOME TAXES - NARRATIVE (Detai

INCOME TAXES - NARRATIVE (Details)	Mar. 31, 2020USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 4,800,000
Unrecognized tax benefits, interest	27,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	97,000
Deferred income tax assets	500,000
Deferred income tax liabilities	500,000
Valuation allowance of deferred tax assets	$ 27,900,000

NET INCOME (LOSS) PER SHARE - R

NET INCOME (LOSS) PER SHARE - RECONCILIATION OF NUMERATORS AND DENOMINATORS USED IN COMPUTING BASIC AND DILUTED NET INCOME (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (4,828)	$ (11,016)
Denominator:
Weighted-average common stock outstanding, basic (in shares)	31,006	31,089
Dilutive effect of potential common shares, Stock options, restricted stock units, restricted stock awards and employee stock purchase plan (in shares)	0	0
Dilutive effect of potential common shares, Total shares, diluted (in shares)	31,006	31,089
Basic net loss per share (in dollars per share)	$ (0.16)	$ (0.35)
Diluted net loss per share (in dollars per share)	$ (0.16)	$ (0.35)

NET INCOME (LOSS) PER SHARE - N

NET INCOME (LOSS) PER SHARE - NARRATIVE (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock options outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to purchase shares of common stock (in shares)	1.4	2.3
RSUs and RSAs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to purchase shares of common stock (in shares)	1.3	0.9

LEASES - NARRATIVE (Details)

LEASES - NARRATIVE (Details) ft² in Thousands, $ in Thousands	Mar. 12, 2020	Mar. 31, 2020USD ($)ft²	Dec. 31, 2019USD ($)
Leases
Operating lease liabilities		$ 4,075	$ 3,814
Right-of-use assets		$ 2,571	$ 2,202
SF Office
Leases
Area \| ft²		5
Operating lease liabilities		$ 600
Operating lease, borrowing rate		3.50%
Right-of-use assets		$ 600
Neato Robotics, Inc.
Lessor Sublease
Number of days for landlord's consent	15 days
Number of days for sublease to commence after premises is delivered	15 days

LEASES - SUMMARY OF RIGHT OF US

LEASES - SUMMARY OF RIGHT OF USE ASSETS AND LEASE LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Right-of-use assets	$ 2,571	$ 2,202
Liabilities
Operating lease liabilities - current	1,423	1,150
Operating lease liabilities - long-term	2,652	2,664
Total lease liabilities	$ 4,075	$ 3,814

LEASES - SCHEDULE OF SUPPLEMENT

LEASES - SCHEDULE OF SUPPLEMENTAL INFORMATION RELATED TO OPERATING LEASES AND EXPENSES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Cash paid within operating cash flow	$ 349
Weighted average lease terms (in years)	2 years 11 months 8 days
Operating lease costs	$ 273	$ 265

LEASES - SCHEDULE OF MINIMUM FU

LEASES - SCHEDULE OF MINIMUM FUTURE LEASE PAYMENT OBLIGATIONS (Details) $ in Thousands	Mar. 31, 2020USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2020	$ 1,186
2021	1,499
2022	1,197
2023	457
2024	24
Total	$ 4,363

LEASES - SCHEDULE OF SUBLEASE I

LEASES - SCHEDULE OF SUBLEASE INCOME EXPECTED TO BE RECEIVED (Details) $ in Thousands	Mar. 31, 2020USD ($)
Leases [Abstract]
Remainder of 2020	$ 599
2021	1,046
2022	1,077
2023	363
Total	$ 3,085

CONTINGENCIES - NARRATIVE (Deta

CONTINGENCIES - NARRATIVE (Details)	Apr. 08, 2020USD ($)	Apr. 08, 2020KRW (₩)	Mar. 27, 2019USD ($)	Mar. 27, 2019KRW (₩)	Mar. 31, 2019USD ($)
Other assets
Loss Contingencies [Line Items]
Deposit asset					$ 6,900,000
Samsung vs. Immersion \| Withholding taxes on royalty payments
Loss Contingencies [Line Items]
Litigation, amount awarded to other party			$ 6,900,000	₩ 7,841,324,165
Litigation, arbitration costs			$ 871,454
Subsequent Event \| LGE vs Immersion \| Withholding taxes on royalty payments
Loss Contingencies [Line Items]
Litigation, amount awarded to other party	$ 5,000,000	₩ 5,916,845,454