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] AOCI Attributable to Parent [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] AOCI Attributable to Parent [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]	AOCI Attributable to Parent [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	$ 0	$ 13,003								$ 0	$ 621	$ 8,559	$ 129,887	$ (111,899)	$ 0	$ 27,168
Issuance of common stock and warrants															$ 0	0	$ 7,418	62,250	0	0	69,668
Issuance of common stock and warrants (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	0	32,760
Conversion of Series B convertible preferred stock to common stock								$ 0	$ (1)	$ 0	$ 1	$ 0	$ 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	0	640
Net loss															$ 0	0	$ 0	0	(3,538)	0	(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)	0	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	$ 0	$ 13,003								$ 0	621	$ 8,559	129,887	(111,899)	0	$ 27,168
Issuance of common stock upon warrant exercise (in shares)																					37,452,000
Conversion of Series B convertible preferred stock to common stock (in shares)														0.037
Net loss																					$ (15,774)
Balance (in shares) at Sep. 30, 2021															1,000		126,622,000
Balance at Sep. 30, 2021															$ 0	584	$ 22,792	242,374	(124,402)	0	141,348
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)	0	139,701
Issuance of common stock and warrants															$ 0	0	$ 917	9,279	0	0	10,196
Issuance of common stock upon warrant exercise (in shares)															0		5,091,000
Conversion of Series B convertible preferred stock to common stock								$ 0	$ (33)	$ 2	$ 31	$ 0	$ 0	$ 0
Conversion of Series B convertible preferred stock to common stock (in shares)								0		9,000
Compensation cost for stock options granted															$ 0	0	$ 0	1,214	0	0	1,214
Net loss															$ 0	0	$ 0	0	(7,039)	0	(7,039)
Balance (in shares) at Jun. 30, 2021															1,000		125,924,000
Balance at Jun. 30, 2021															$ 0	587	$ 22,667	240,023	(119,205)	0	144,072
Issuance of common stock and warrants															$ 0	0	$ 53	809	0	0	$ 862
Issuance of common stock upon warrant exercise (in shares)															0		296,000				296,000
Conversion of Series B convertible preferred stock to common stock															$ 0	(3)	$ 0	3	0	0	$ 0
Conversion of Series B convertible preferred stock to common stock (in shares)														0.003	0		1,000
Compensation cost for stock options granted															$ 0	0	$ 0	1,794	0	0	1,794
Net loss															$ 0	0	$ 0	0	(5,197)	0	(5,197)
Common stock issued for options exercises (in shares)															0		699,000
Common stock issued for options exercises															$ 0	0	$ 126	1,597	0	0	1,723
Shares withheld related to cashless exercise of options and taxes (in shares)															0		(298,000)
Shares withheld related to cashless exercise of options and taxes															$ 0	0	$ (54)	(1,852)		0	(1,906)
Balance (in shares) at Sep. 30, 2021															1,000		126,622,000
Balance at Sep. 30, 2021															$ 0	584	$ 22,792	242,374	(124,402)	0	141,348
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)	0	138,136
Compensation cost for stock options granted															0	0	0	1,806	0	0	1,806
Net loss															$ 0	0	$ 0	0	(4,786)	0	(4,786)
Balance (in shares) at Mar. 31, 2022															1,000		126,624,000
Balance at Mar. 31, 2022															$ 0	582	$ 22,792	245,802	(134,020)	0	135,156
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)	0	138,136
Conversion of Series B convertible preferred stock to common stock (in shares)														0
Net loss																					$ (19,469)
Common stock issued for options exercises (in shares)																					(0)
Balance (in shares) at Sep. 30, 2022															1,000		126,624,000
Balance at Sep. 30, 2022															$ 0	582	$ 22,792	249,239	(148,703)	(54)	$ 123,856
Balance (in shares) at Mar. 31, 2022															1,000		126,624,000
Balance at Mar. 31, 2022															$ 0	582	$ 22,792	245,802	(134,020)	0	135,156
Compensation cost for stock options granted															0	0	0	1,771	0		1,771
Net loss															$ 0	0	$ 0	0	(6,672)	0	(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	(140,692)	0	130,255
Conversion of Series B convertible preferred stock to common stock (in shares)														0
Compensation cost for stock options granted															0	0	0	1,666	0	0	1,666
Net loss															0	0	0	0	(8,011)	0	(8,011)
Other comprehensive loss															$ 0	0	$ 0	0	0	(54)	(54)
Balance (in shares) at Sep. 30, 2022															1,000		126,624,000
Balance at Sep. 30, 2022															$ 0	$ 582	$ 22,792	$ 249,239	$ (148,703)	$ (54)	$ 123,856