Commitments and Contingencies (Details 2) $ in Thousands	12 Months Ended
	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.