Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 86,268	$ 81,138	$ (15,671)
Other comprehensive income:
Foreign currency translation adjustments	48,068	0	0
Unrealized gains on marketable securities, net of tax	579	201	32
Comprehensive income (loss)	$ 134,915	$ 81,339	$ (15,639)