Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 4,018	$ (537)	$ (5,683)	$ (10,303)
Other comprehensive (loss) income, net of tax:
Unrealized loss on available-for-sale securities		0	(1)	0	(1)
Foreign currency translation adjustment		(370)	1,103	(106)	(1,507)
Other comprehensive (loss) income, net of tax	[1]	(370)	1,102	(106)	(1,508)
Total comprehensive income (loss)		$ 3,648	$ 565	$ (5,789)	$ (11,811)

[1] Tax impact was nominal for all periods.