Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal tax	$ 25,272	$ 41,632	$ 31,488
State income taxes, net of federal tax provision	(378)	1,389	(375)
Foreign income taxed at different tax rates	81	(5,786)	(2,844)
U.S. tax impact of foreign operations	(3,031)	(3,340)	4,140
Foreign withholding taxes	(1,798)	22,685	10,962
Research and development	(4,210)	(3,686)	(3,541)
Liability for unrecognized tax benefits	3,044	2,041	2,457
Valuation allowance	2,199	(10,563)	(379)
Employee stock-based compensation	(660)	(52)	(2,154)
U.S. Tax Cuts and Jobs Act			2,762
Other	593	(189)	2,040
Total income tax provision	$ 21,112	$ 44,131	$ 44,556
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Income tax rate, Federal tax	21.00%	21.00%	21.00%
Income tax rate, State income taxes, net of federal tax provision	(0.30%)	0.70%	(0.30%)
Income tax rate, Foreign income taxed at different tax rates	0.10%	(2.90%)	(1.90%)
Income tax rate, U.S. tax impact of foreign operations	(2.50%)	(1.70%)	2.80%
Income tax rate, Foreign withholding taxes	(1.50%)	11.40%	7.30%
Income tax rate, Research and development	(3.50%)	(1.90%)	(2.40%)
Income tax rate, Liability for unrecognized tax benefits	2.50%	1.00%	1.60%
Income tax rate, Valuation allowance	1.80%	(5.30%)	(0.30%)
Income tax rate, Employee stock-based compensation	(0.50%)		(1.40%)
Income tax rate, U.S. Tax Cuts and Jobs Act			1.80%
Income tax rate, Other	0.50%	(0.10%)	1.40%
Income tax rate, Total	17.50%	22.30%	29.70%