Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Series B Convertible Preferred Stock	Series C Convertible Preferred Stock	Common Stock	Treasury Stock	Additional Paid In Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ (23,562)			$ 116		$ 20,493	$ (44,171)
Temporary Equity, Beginning Balance, Shares at Dec. 31, 2020		11,155,506	6,032,170
Temporary Equity, Beginning Balance at Dec. 31, 2020		$ 26,560	$ 22,500
Beginning Balance, Shares at Dec. 31, 2020				11,635,094
Options exercised	35					35
Options exercised, Shares				24,410
Warrants exercised	410			$ 1		409
Warrants exercised, Shares				72,385
Stock-based compensation	1,250					1,250
Change in fair value of NC Ohio Trust Warrants	250					250
Net loss	(21,558)						(21,558)
Ending Balance at Jun. 30, 2021	(43,175)			$ 117		22,437	(65,729)
Temporary equity, Ending Balance, Shares at Jun. 30, 2021		11,155,506	6,032,170
Temporary equity, Ending Balance at Jun. 30, 2021		$ 26,560	$ 22,500
Ending Balance, Shares at Jun. 30, 2021				11,731,889
Beginning Balance at Mar. 31, 2021	(27,497)			$ 117		21,035	(48,649)
Temporary Equity, Beginning Balance, Shares at Mar. 31, 2021		11,155,506	6,032,170
Temporary Equity, Beginning Balance at Mar. 31, 2021		$ 26,560	$ 22,500
Beginning Balance, Shares at Mar. 31, 2021				11,673,135
Options exercised	333					333
Options exercised, Shares				58,754
Stock-based compensation	819					819
Change in fair value of NC Ohio Trust Warrants	250					250
Net loss	(17,080)						(17,080)
Ending Balance at Jun. 30, 2021	(43,175)			$ 117		22,437	(65,729)
Temporary equity, Ending Balance, Shares at Jun. 30, 2021		11,155,506	6,032,170
Temporary equity, Ending Balance at Jun. 30, 2021		$ 26,560	$ 22,500
Ending Balance, Shares at Jun. 30, 2021				11,731,889
Beginning Balance at Dec. 31, 2021	$ 64,137			$ 286		144,146	(80,295)
Beginning Balance, Shares at Dec. 31, 2021	28,689,842			28,689,842
Options exercised	$ 476			$ 4		472
Options exercised, Shares	324,675			324,675
Treasury stock acquired	$ (448)				$ (448)	0
Treasury stock acquired, Shares					(122,608)
Stock-based compensation	1,552					1,552
Change in fair value of NC Ohio Trust Warrants	(622)					(622)
Net loss	(5,023)						(5,023)
Ending Balance at Jun. 30, 2022	$ 60,072			$ 290	$ (448)	145,548	(85,318)
Ending Balance, Shares at Jun. 30, 2022	28,891,909			29,014,517	(122,608)
Beginning Balance at Mar. 31, 2022	$ 63,762			$ 287		144,644	(81,169)
Beginning Balance, Shares at Mar. 31, 2022				28,693,151
Options exercised	470			$ 3		467
Options exercised, Shares				321,366
Treasury stock acquired	(448)				$ (448)
Treasury stock acquired, Shares					(122,608)
Stock-based compensation	724					724
Change in fair value of NC Ohio Trust Warrants	(287)					(287)
Net loss	(4,149)						(4,149)
Ending Balance at Jun. 30, 2022	$ 60,072			$ 290	$ (448)	$ 145,548	$ (85,318)
Ending Balance, Shares at Jun. 30, 2022	28,891,909			29,014,517	(122,608)