Statements of Changes in Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2019	$ 1	$ 98,433	$ (95,867)	$ 2,567
Balance (in Shares) at Dec. 31, 2019	1,414,671
Stock based compensation		645		645
Issuance of common stock, sold for cash, net	$ 2	5,739		5,741
Issuance of common stock, sold for cash, net (in Shares)	1,928,180
Issuance of common stock upon exercise of warrants	$ 2	2,628		2,630
Issuance of common stock upon exercise of warrants (in Shares)	1,700,680
Issuance of common stock upon cashless exercise of warrants		238		238
Issuance of common stock upon cashless exercise of warrants (in Shares)	51,414
Issuance costs of common stock for services
Issuance costs of common stock for services (in Shares)	4,543
Issuance of common stock for fractional shares-20-1 reverse split
Issuance of common stock for fractional shares-20-1 reverse split (in Shares)	24
Warrant antidilution price protection adjustment		436		436
Net loss			(8,373)	(8,373)
Balance at Dec. 31, 2020	$ 5	108,119	(104,240)	3,884
Balance (in Shares) at Dec. 31, 2020	5,099,512
Stock based compensation		765		765
Shares forfeited for payment of employee withholding taxes related to share based awards		(17)		(17)
Issuance of common stock, sold for cash, net	$ 6	12,415		12,421
Issuance of common stock, sold for cash, net (in Shares)	6,163,854
Issuance of common stock upon exercise of warrants	$ 1	1,249		1,250
Issuance of common stock upon exercise of warrants (in Shares)	922,966
Issuance costs of common stock for services
Issuance costs of common stock for services (in Shares)	20,951
Net loss			(8,268)	(8,268)
Balance at Dec. 31, 2021	$ 12	$ 122,531	$ (112,508)	$ 10,035
Balance (in Shares) at Dec. 31, 2021	12,207,283