UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY - USD ($) $ in Thousands	Common Shares Issued [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Beginning balance, value at Dec. 31, 2020	$ 17,428	$ 174	$ (362)	$ 77,187	$ (61,295)	$ (43)
Stock-based compensation				1,010
Exercise of stock options	203	2		166
Public stock offerings proceeds, net of fees
Partial extinguishment of operating lease with common stock
Issuance of shares from public stock offering
Issuance of new restricted stock, net of current forfeitures
Issuance of shares from extinguishment of operating lease
Net loss					(8,854)		(8,854)
Ending balance, value at Jun. 30, 2021	17,631	176		78,363	(70,149)		7,985
Beginning balance, value at Mar. 31, 2021	17,625	176	(362)	77,550	(65,198)	(43)
Stock-based compensation				806
Exercise of stock options	6			7
Public stock offerings proceeds, net of fees
Partial extinguishment of operating lease with common stock
Issuance of shares from public stock offering
Issuance of new restricted stock, net of current forfeitures
Issuance of shares from extinguishment of operating lease
Net loss					(4,951)		(4,951)
Ending balance, value at Jun. 30, 2021	17,631	176		78,363	(70,149)		7,985
Beginning balance, value at Dec. 31, 2021	19,135	191	(362)	84,230	(80,097)	(43)	3,919
Stock-based compensation				876
Exercise of stock options	97	1		65
Public stock offerings proceeds, net of fees		4		1,200
Partial extinguishment of operating lease with common stock				200
Issuance of shares from public stock offering	332
Issuance of new restricted stock, net of current forfeitures	106	1		(1)
Issuance of shares from extinguishment of operating lease	75
Net loss					(8,119)		(8,119)
Ending balance, value at Jun. 30, 2022	19,745	197		86,570	(88,216)		(1,854)
Beginning balance, value at Mar. 31, 2022	19,474	195	(362)	85,663	(84,151)	(43)
Stock-based compensation				450
Exercise of stock options	6			4
Public stock offerings proceeds, net of fees		1		254
Partial extinguishment of operating lease with common stock				200
Issuance of shares from public stock offering	84
Issuance of new restricted stock, net of current forfeitures	106	1		(1)
Issuance of shares from extinguishment of operating lease	75
Net loss					(4,065)		(4,065)
Ending balance, value at Jun. 30, 2022	$ 19,745	$ 197		$ 86,570	$ (88,216)		$ (1,854)