Consolidated Statements of Changes in Series A And Series B Convertible Preferred Stock and Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Series A Preferred Stock [Member] Preferred Stock [Member]	Series A Preferred Stock [Member] Additional Paid-in Capital [Member]	Series A Preferred Stock [Member]	Series B Preferred Stock [Member] Preferred Stock [Member]	Series B Preferred Stock [Member] Additional Paid-in Capital [Member]	Series B Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2020	15,000			8,000			13,911,633
Balance at Dec. 31, 2020	$ 13,662			$ 7,723			$ 14	$ 91,203	$ (102,149)	$ (10,932)
Stock-based compensation expense								573		573
Net income (loss)									(11,540)	(11,540)
Preferred stock - declared dividends		$ (217)	$ (217)		$ (105)	$ (105)
Financing (in shares)							8,924,700
Financing							$ 9	66,873		66,882
Balance (in shares) at Mar. 31, 2021	15,000			8,000			22,836,333
Balance at Mar. 31, 2021	$ 13,662			$ 7,723			$ 23	158,327	(113,689)	44,661
Balance (in shares) at Dec. 31, 2021	12,642						27,539,229
Balance at Dec. 31, 2021	$ 13,708						$ 28	183,912	(148,274)	35,666
Stock-based compensation expense								1,088		1,088
Net income (loss)									(10,785)	(10,785)
Balance (in shares) at Mar. 31, 2022	12,642			2,364			27,539,229
Balance at Mar. 31, 2022	$ 13,708			$ 2,306			$ 28	$ 185,000	$ (159,059)	$ 25,969