Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Partners Capital [Abstract]
Net income (loss)	$ 41,925	$ 15,457	$ 26,639
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(7,773)	(25,122)	35,352
Net change in unrealized gains (losses) on available-for-sale marketable debt securities, net of tax	277	180	(155)
Other comprehensive income (loss), net of tax:	(7,496)	(24,942)	35,197
Comprehensive income (loss):	$ 34,429	$ (9,485)	$ 61,836