CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock and Additional Paid-in Capital [Member]	Accumulated Deficit (Retained Earnings) [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2020	$ 232,464	$ (8,014)	$ (13)	$ 224,437
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for options/RSUs, net	(196)
Stock-based compensation	1,853
Net (loss) income		(33,294)		(33,294)
Change in unrealized investment gain/loss, net			2	2
Change in foreign currency translation, net			(3)	(3)
Balance at Jun. 30, 2021	234,121	(41,308)	(14)	192,799
Balance at Mar. 31, 2021	233,343	(34,457)	(11)	198,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for options/RSUs, net	(196)
Stock-based compensation	974
Net (loss) income		(6,851)		(6,851)
Change in unrealized investment gain/loss, net			(3)	(3)
Change in foreign currency translation, net			0	0
Balance at Jun. 30, 2021	234,121	(41,308)	(14)	192,799
Balance at Dec. 31, 2021	236,452	(50,935)	(68)	185,449
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for options/RSUs, net	(29)
Stock-based compensation	1,590
Net (loss) income		(7,757)		(7,757)
Change in unrealized investment gain/loss, net			(281)	(281)
Change in foreign currency translation, net			(6)	(6)
Balance at Jun. 30, 2022	238,013	(58,692)	(355)	178,966
Balance at Mar. 31, 2022	237,230	(54,255)	(242)	182,733
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for options/RSUs, net	(29)
Stock-based compensation	812
Net (loss) income		(4,437)		(4,437)
Change in unrealized investment gain/loss, net			(110)	(110)
Change in foreign currency translation, net			(3)	(3)
Balance at Jun. 30, 2022	$ 238,013	$ (58,692)	$ (355)	$ 178,966