CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) [Abstract]
Net income (loss)	$ (4,437)	$ (6,851)	$ (7,757)	$ (33,294)
Other comprehensive income (loss):
Change in unrealized gain (loss) on investments, net of tax	(110)	(3)	(281)	2
Change in foreign currency translation, net of tax	(3)	0	(6)	(3)
Total other comprehensive income (loss)	(113)	(3)	(287)	(1)
Comprehensive income (loss)	$ (4,550)	$ (6,854)	$ (8,044)	$ (33,295)