Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance at Dec. 31, 2021	$ 142,866	$ 0	$ 9	$ 0	$ 292,082	$ 7	$ (149,232)
Beginning balance (in shares) at Dec. 31, 2021		0	92,619,641	10,762,566
Shares issued during the period for vested restricted stock awards			$ 1		(1)
Shares issued during the period for vested restricted stock awards, shares			5,311,326
Issuance of common stock upon exercise of stock options	428				428
Issuance of common stock upon exercise of stock options, shares			1,793,876
Stock-based compensation	4,610				4,610
Net loss	(27,793)						(27,793)
Other comprehensive gain (loss)	57					57
Ending balance at Mar. 31, 2022	120,168	$ 0	$ 10	$ 0	297,119	64	(177,025)
Ending balance (in shares) at Mar. 31, 2022		0	99,724,843	10,762,566
Beginning balance at Dec. 31, 2022	66,450	$ 0	$ 11	$ 0	315,345	(61)	(248,845)
Beginning balance (in shares) at Dec. 31, 2022		0	105,032,588	10,762,566
Shares issued during the period for vested restricted stock awards	2,775				2,775
Shares issued during the period for vested restricted stock awards, shares			1,498,987
Issuance of common stock upon exercise of stock options	51				51
Issuance of common stock upon exercise of stock options, shares			265,125
Shares issued for legal settlement	2,000				2,000
Shares issued for legal settlement, shares			797,396
Sale of shares	6,292				6,292
Sale of shares, shares			2,683,000
Stock issuance costs	(32)				(32)
Stock-based compensation	2,472				2,472
Net loss	(11,762)						(11,762)
Other comprehensive gain (loss)	(5)					(5)
Ending balance at Mar. 31, 2023	$ 68,241	$ 0	$ 11	$ 0	$ 328,903	$ (66)	$ (260,607)
Ending balance (in shares) at Mar. 31, 2023		0	110,277,096	10,762,566