Condensed Consolidated Statements of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Balance, beginning of period at Dec. 31, 2020		$ 364	$ 379,917	$ (321,412)	$ (5,086)
Vesting of restricted stock		5	(5)
Stock-based compensation expense			8,574
Modification of liability awards to equity			0
Net income (loss)	$ (13,482)			(13,482)
Restricted stock vesting and withholding				(905)
Foreign currency translation adjustment	(1,588)				(1,588)
Balance at Sep. 30, 2021	46,382	369	388,486	(335,799)	(6,674)
Balance, beginning of period at Jun. 30, 2021		367	384,776	(333,853)	(5,062)
Vesting of restricted stock		2	(2)
Stock-based compensation expense			3,712
Modification of liability awards to equity			0
Net income (loss)	(1,829)			(1,829)
Restricted stock vesting and withholding				(117)
Foreign currency translation adjustment	(1,612)				(1,612)
Balance at Sep. 30, 2021	46,382	369	388,486	(335,799)	(6,674)
Balance, beginning of period at Dec. 31, 2021	41,571	369	392,161	(344,889)	(6,070)
Vesting of restricted stock		8	(8)
Stock-based compensation expense			10,572
Modification of liability awards to equity			2,391
Net income (loss)	(10,576)			(10,576)
Restricted stock vesting and withholding				(201)
Foreign currency translation adjustment	466				466
Balance at Sep. 30, 2022	44,223	377	405,116	(355,666)	(5,604)
Balance, beginning of period at Jun. 30, 2022		371	397,785	(355,951)	(5,627)
Vesting of restricted stock		6	(6)
Stock-based compensation expense			4,946
Modification of liability awards to equity			2,391
Net income (loss)	476			476
Restricted stock vesting and withholding				(191)
Foreign currency translation adjustment	23				23
Balance at Sep. 30, 2022	$ 44,223	$ 377	$ 405,116	$ (355,666)	$ (5,604)