Condensed 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 loss	$ (3,476)	$ (492)	$ (25,703)	$ (2,212)
Other Comprehensive (Loss) Income, net of tax:
Unrealized (losses) gains on marketable securities arising during the period	(40)	(3)	(110)	14
Tax effect	0	4	0	0
Unrealized (losses) gains on marketable securities arising during the period, net of tax	(40)	1	(110)	14
Reclassification adjustment for realized losses	0	5	(5)	2
Tax effect	0	(1)	0	0
Reclassification adjustment for realized losses, net of tax	0	4	(5)	2
Other comprehensive income, net of tax	(40)	5	(115)	16
Total Comprehensive (Loss)	$ (3,516)	$ (487)	$ (25,818)	$ (2,196)