CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 10,369	$ 8,159
Other comprehensive income (loss):
Net unrealized loss on investments, net of tax	(150)	(1,368)
Foreign currency translation adjustments	4	0
Total other comprehensive loss	(146)	(1,368)
Comprehensive income	$ 10,223	$ 6,791