Condensed Consolidated Statements of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance, beginning of period at Dec. 31, 2020	$ 364	$ 379,917	$ (321,412)	$ (5,086)
Vesting of restricted stock	3	(3)
Stock-based compensation expense		4,862
Net income (loss)			(11,653)
Restricted stock vesting and withholding			(788)
Foreign currency translation adjustment				24	$ 24
Balance at Jun. 30, 2021	367	384,776	(333,853)	(5,062)	46,228
Balance, beginning of period at Mar. 31, 2021	366	381,547	(329,960)	(5,948)
Vesting of restricted stock	1	(1)
Stock-based compensation expense		3,230
Net income (loss)			(3,883)
Restricted stock vesting and withholding			(10)
Foreign currency translation adjustment				886	886
Balance at Jun. 30, 2021	367	384,776	(333,853)	(5,062)	46,228
Balance, beginning of period at Dec. 31, 2021	369	392,161	(344,889)	(6,070)	41,571
Vesting of restricted stock	2	(2)
Stock-based compensation expense		5,626
Net income (loss)			(11,052)
Restricted stock vesting and withholding			(10)
Foreign currency translation adjustment				443	443
Balance at Jun. 30, 2022	371	397,785	(355,951)	(5,627)	36,578
Balance, beginning of period at Mar. 31, 2022	371	395,837	(357,493)	(5,066)
Vesting of restricted stock	0	0
Stock-based compensation expense		1,948
Net income (loss)			1,542		1,542
Restricted stock vesting and withholding			0
Foreign currency translation adjustment				(561)	(561)
Balance at Jun. 30, 2022	$ 371	$ 397,785	$ (355,951)	$ (5,627)	$ 36,578