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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Nov. 17, 2017
Contractual obligations          
2023 [1],[2] $ 34,553        
2024 [1],[2] 19,559        
2025 [1],[2] 8,433        
2026 [1],[2] 0        
2027 [1],[2] 0        
Total contractual obligation [1],[2] 62,545        
Unrecognized tax benefit excluding foreign tax withholdings 20,900        
Unrecognized tax benefits $ 164,531 $ 146,215 $ 134,044 $ 115,653  
Terms of noncancellable license agreement, minimum (in years) 1 year        
1.375% Convertible senior notes due 2023 | Convertible senior notes          
Contractual obligations          
Face value $ 10,381 172,500     $ 172,500
Repurchased convertible debt, face amount 162,100        
Long-term deferred tax assets          
Contractual obligations          
Unrecognized tax benefits 19,600 18,900      
Long-term income taxes payable          
Contractual obligations          
Unrecognized tax benefits 1,300 $ 1,300      
Other commitments          
Contractual obligations          
2023 [1],[2] 3,200        
2024 [1],[2] 600        
2025 [1],[2] 0        
2026 [1],[2] 0        
2027 [1],[2] 0        
Total contractual obligation [1],[2] 3,800        
Software licenses          
Contractual obligations          
2023 [1],[2],[3] 18,394        
2024 [1],[2],[3] 16,452        
2025 [1],[2],[3] 8,083        
2026 [1],[2],[3] 0        
2027 [1],[2],[3] 0        
Total contractual obligation [1],[2],[3] 42,929        
Software licenses | Engineering development tools | Other Current Liabilities          
Contractual obligations          
Total contractual obligation 15,600        
Software licenses | Engineering development tools | Other Noncurrent Liabilities          
Contractual obligations          
Total contractual obligation 22,200        
Acquisition retention bonuses          
Contractual obligations          
2023 [1],[2],[4] 2,507        
2024 [1],[2],[4] 2,507        
2025 [1],[2],[4] 350        
2026 [1],[2],[4] 0        
2027 [1],[2],[4] 0        
Total contractual obligation [1],[2],[4] 5,364        
Convertible senior notes          
Contractual obligations          
2023 [1],[2],[5] 10,381        
2024 [1],[2],[5] 0        
2025 [1],[2],[5] 0        
2026 [1],[2],[5] 0        
2027 [1],[2],[5] 0        
Total contractual obligation [1],[2],[5] 10,381        
Interest payments related to convertible notes          
Contractual obligations          
2023 [1],[2] 71        
2024 [1],[2] 0        
2025 [1],[2] 0        
2026 [1],[2] 0        
2027 [1],[2] 0        
Total contractual obligation [1],[2] $ 71        
[1] For the Company’s lease commitments as of December 31, 2022, refer to Note 10, “Leases.”
[2] The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $20.9 million including $19.6 million recorded as a reduction of long-term deferred tax assets and $1.3 million in long-term income taxes payable, as of December 31, 2022. As noted below in Note 18, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.
[3] The Company has commitments with various software vendors for agreements generally having terms longer than one year. During the second and fourth quarters of 2022, the Company renewed certain software license agreements for engineering development tools, which are included in the table above. As of December 31, 2022, approximately $15.6 million of the fair value of the liability was included in other current liabilities and $22.2 million was included in other long-term liabilities, in the accompanying consolidated balance sheet.
[4] In connection with the acquisition of Northwest Logic, Inc. (“Northwest Logic”) in the third quarter of 2019, the Secure Silicon IP and Protocols business from Verimatrix, formerly Inside Secure, in the fourth quarter of 2019, the acquisitions of AnalogX and PLDA in the third quarter of 2021, and the acquisition of Hardent in the second quarter of 2022, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment.
[5] On November 17, 2017, the Company entered into an Indenture with U.S. Bank National Association, as trustee, relating to the issuance by the Company of $172.5 million aggregate principal amount of the 2023 Notes. During the year ended December 31, 2022, the Company repurchased $162.1 million aggregate principal amount of its 2023 Notes. Refer to Note 12, “Convertible Notes,” for additional information.