Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Difference between income tax provision computed at the statutory Federal income tax rate and financial statement income tax
Provision at Federal rate of 21%	$ 21,199	$ 17,925	$ 22,202
State income taxes, net of Federal impact	4,882	3,430	2,792
Research and experimentation credits	(2,062)	(2,705)	(3,314)
Stock award vesting	(538)	(540)	(3,661)
Tax uncertainties	69	(403)	(56)
Section 162(m) compensation limitation	1,610	4,494	978
Foreign rate differential	592	462	930
Valuation allowance for deferred tax assets	1,427	1,002	(495)
Withholding tax	2,305	2,572	2,408
Other impact of foreign operations	(468)	621	227
Statutory rate change	(299)	71	(10)
Other	(102)	(284)	952
Total income tax provision	$ 28,615	$ 26,645	$ 22,953