Income Taxes - Difference between the Provision For (Benefit From) Income Taxes Compared to Income Taxes Computed at the Statutory Federal Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal tax provision at statutory rate	$ 15,525	$ 7,479	$ 1,579
State taxes	2,258	651	224
Non-deductible expenses	2,898	1,424	1,373
Uncertain tax positions	(2,472)	(412)	(295)
Share-based compensation tax benefit	(7,892)	(4,005)	(5,887)
Research tax credits	(3,805)	(3,230)	(3,233)
Domestic production deduction	0	0	(621)
Restructuring impact	7,432	(4,205)	0
Foreign derived intangible income deduction	(449)	(349)	0
Foreign rate differential	(1,424)	561	938
One-time impact of the Tax Act	0	0	(20,005)
Other	524	(27)	(79)
Total provision for (benefit from) income taxes	$ 12,595	$ (2,113)	$ (26,006)