Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Preferred Stock [Member] Series B Convertible Preferred Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Preferred Stock Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock, Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member] Preferred Stock [Member] Series B Convertible Preferred Stock [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member] Preferred Stock Additional Paid-in Capital [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member] Common Stock [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member] Common Stock, Additional Paid-in Capital [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member] Retained Earnings [Member]	Conversion of Series B Convertible Preferred Stock into Common Stock [Member]	Preferred Stock [Member] Series B Convertible Preferred Stock [Member]	Preferred Stock Additional Paid-in Capital [Member]	Common Stock [Member]	Common Stock, Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2020													1,000		47,550,000
Balance at Dec. 31, 2020	$ 0	$ 0	$ 0	$ 9,732	$ 3,271	$ 13,003							$ 0	$ 621	$ 8,559	$ 129,887	$ (111,899)	$ 27,168
Issuance of common stock and warrants													$ 0	0	$ 7,418	62,250	0	69,668
Issuance of common stock and warrants, shares (in shares)															41,211,000
Issuance of common stock upon warrant exercise (in shares)													0		32,063,000
Issuance of common stock upon warrant exercise													$ 0	0	$ 5,771	26,989	0	32,760
Conversion of Series B convertible preferred stock to common stock							$ 0	$ (1)	$ 0	$ 1	$ 0	$ 0
Conversion of Series B convertible preferred stock to common stock (in shares)									0
Compensation cost for stock options granted													0	0	0	640	0	640
Net loss													$ 0	0	$ 0	0	(3,538)	(3,538)
Balance (in shares) at Mar. 31, 2021													1,000		120,824,000
Balance at Mar. 31, 2021													$ 0	620	$ 21,748	229,499	(112,166)	139,701
Balance (in shares) at Dec. 31, 2020													1,000		47,550,000
Balance at Dec. 31, 2020	$ 0	$ 0	$ 0	$ 9,732	$ 3,271	$ 13,003							$ 0	621	$ 8,559	129,887	(111,899)	$ 27,168
Issuance of common stock upon warrant exercise (in shares)																		37,154,000
Conversion of Series B convertible preferred stock to common stock (in shares)												0.034
Net loss																		$ (10,577)
Balance (in shares) at Jun. 30, 2021													1		125,924
Balance at Jun. 30, 2021													$ 0	587	$ 22,667	240,023	(119,205)	144,072
Balance (in shares) at Mar. 31, 2021													1,000		120,824,000
Balance at Mar. 31, 2021													$ 0	620	$ 21,748	229,499	(112,166)	139,701
Issuance of common stock and warrants													$ 0	0	$ 917	9,279	0	$ 10,196
Issuance of common stock upon warrant exercise (in shares)													0		5,091			5,091,000
Conversion of Series B convertible preferred stock to common stock							$ 0	$ (33)	$ 2	$ 31	$ 0	$ 0
Conversion of Series B convertible preferred stock to common stock (in shares)							0		9			0.033
Compensation cost for stock options granted													$ 0	0	$ 0	1,214	0	$ 1,214
Net loss													$ 0	0	$ 0	0	(7,039)	(7,039)
Balance (in shares) at Jun. 30, 2021													1		125,924
Balance at Jun. 30, 2021													$ 0	587	$ 22,667	240,023	(119,205)	144,072
Balance (in shares) at Dec. 31, 2021													1,000		126,624,000
Balance at Dec. 31, 2021													$ 0	582	$ 22,792	243,996	(129,234)	138,136
Compensation cost for stock options granted													0	0	0	1,806	0	1,806
Net loss													$ 0	0	$ 0	0	(4,785)	(4,785)
Balance (in shares) at Mar. 31, 2022													1,000		126,624,000
Balance at Mar. 31, 2022													$ 0	582	$ 22,792	245,802	(134,019)	135,157
Balance (in shares) at Dec. 31, 2021													1,000		126,624,000
Balance at Dec. 31, 2021													$ 0	582	$ 22,792	243,996	(129,234)	138,136
Conversion of Series B convertible preferred stock to common stock (in shares)												0
Net loss																		(11,457)
Balance (in shares) at Jun. 30, 2022													1,000		126,624,000
Balance at Jun. 30, 2022													$ 0	582	$ 22,792	247,573	(140,691)	130,256
Balance (in shares) at Mar. 31, 2022													1,000		126,624,000
Balance at Mar. 31, 2022													$ 0	582	$ 22,792	245,802	(134,019)	135,157
Conversion of Series B convertible preferred stock to common stock (in shares)												0
Compensation cost for stock options granted													0	0	0	1,771	0	1,771
Net loss													$ 0	0	$ 0	0	(6,672)	(6,672)
Balance (in shares) at Jun. 30, 2022													1,000		126,624,000
Balance at Jun. 30, 2022													$ 0	$ 582	$ 22,792	$ 247,573	$ (140,691)	$ 130,256