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Commitments and Contingencies (Details 2) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Contractual obligations |  |
Contractual Obligation, Due in Next Fiscal Year | $ 18,283 | [1],[2],[3]
Contractual Obligation, Due in Second Year | 11,801 | [1],[2],[3]
Contractual Obligation, Due in Third Year | 173,692 | [1],[2],[3]
Contractual Obligation, Due in Fourth Year | 0 | [1],[2],[3]
Contractual Obligation, Due in Fifth Year | 0 | [1],[2],[3]
Contractual obligation | 203,776 | [1],[2],[3]
Unrecognized tax benefit excluding foreign tax withholdings | $ 25,500 |
Terms of noncancellable license agreement, minimum (in years) | 1 year |
Software licenses |  |
Contractual obligations |  |
Contractual Obligation, Due in Next Fiscal Year | $ 12,541 | [1],[2],[3],[4]
Contractual Obligation, Due in Second Year | 6,429 | [1],[2],[3],[4]
Contractual Obligation, Due in Third Year | 0 | [1],[2],[3],[4]
Contractual Obligation, Due in Fourth Year | 0 | [1],[2],[3],[4]
Contractual Obligation, Due in Fifth Year | 0 | [1],[2],[3],[4]
Contractual obligation | 18,970 | [1],[2],[3],[4]
Acquisition retention bonuses |  |
Contractual obligations |  |
Contractual Obligation, Due in Next Fiscal Year | 3,370 | [1],[2],[3],[5]
Contractual Obligation, Due in Second Year | 3,000 | [1],[2],[3],[5]
Contractual Obligation, Due in Third Year | 0 | [1],[2],[3],[5]
Contractual Obligation, Due in Fourth Year | 0 | [1],[2],[3],[5]
Contractual Obligation, Due in Fifth Year | 0 | [1],[2],[3],[5]
Contractual obligation | 6,370 | [1],[2],[3],[5]
Convertible senior notes |  |
Contractual obligations |  |
Contractual Obligation, Due in Next Fiscal Year | 0 | [1],[2],[3]
Contractual Obligation, Due in Second Year | 0 | [1],[2],[3]
Contractual Obligation, Due in Third Year | 172,500 | [1],[2],[3]
Contractual Obligation, Due in Fourth Year | 0 | [1],[2],[3]
Contractual Obligation, Due in Fifth Year | 0 | [1],[2],[3]
Contractual obligation | 172,500 | [1],[2],[3]
Interest payments related to convertible notes |  |
Contractual obligations |  |
Contractual Obligation, Due in Next Fiscal Year | 2,372 | [1],[2],[3]
Contractual Obligation, Due in Second Year | 2,372 | [1],[2],[3]
Contractual Obligation, Due in Third Year | 1,192 | [1],[2],[3]
Contractual Obligation, Due in Fourth Year | 0 | [1],[2],[3]
Contractual Obligation, Due in Fifth Year | 0 | [1],[2],[3]
Contractual obligation | $ 5,936 | [1],[2],[3]
[1] | For the Company’s lease commitments as of December 31, 2020, refer to Note 10, “Leases.”
[2] | The Company’s other contractual obligations as of December 31, 2020 were not material.
[3] | The above table does not reflect possible payments in connection with unrecognized tax benefits of approximately $25.5 million including $23.6 million recorded as a reduction of long-term deferred tax assets and $1.9 million in long-term income taxes payable, as of December 31, 2020. As noted below in Note 19, “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.
[4] | The Company has commitments with various software vendors for agreements generally having terms longer than one year.
[5] | In connection with the acquisitions of Northwest Logic in August 2019 and the Secure Silicon IP and Protocols business in December 2019, the Company is obligated to pay retention bonuses to certain employees subject to certain eligibility and acceleration provisions including the condition of employment.

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