Consolidated Statements of Changes in Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 27	$ 56,027	$ (56,061)	$ (7)
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2019	27,028,533
Stock-based compensation expense		2,044		2,044
Issuance of common stock for prepaid services		330		330
[custom:IssuanceOfCommonStockForPrepaidServicesShares]	400,000
Issuance of common stock for license acquired	$ 2	2,441		2,443
Issuance of common stock, net of issuance costs	$ 15	8,835		8,850
Issuance of common stock for license acquired, shares	1,809,845
Issuance of common stock, net of issuance costs, shares	15,166,666
Net Income (Loss) Attributable to Parent			(19,101)	(19,101)
Warrants exercised for cash		169		$ 169
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2020	54,535,891			54,535,891
Issuance of common stock and warrants, pursuant to September 2020 Securities Purchase Agreement, net of issuance costs	8,865,000
Issuance of common stock and warrants, pursuant to Securities Purchase Agreement, net of issuance costs, shares	1,112,219
Warrants exercised for cash, shares	153,628
Issuance of common stock and warrants, pursuant to     Securities Purchase Agreement, net of issuance costs	$ 1	1,378		$ 1,379
Issuance of common stock and warrants, pursuant to     September 2020 Securities Purchase Agreement,     net of issuance costs	9	6,356		6,365
Net loss			(19,101)	(19,101)
Ending balance, value at Dec. 31, 2020	54	77,680	(75,162)	2,572
Stock-based compensation expense		8,347		8,347
Issuance of common stock, options exercised		102		102
Issuance of common stock, options exercised, shares	79,138
Issuance of common stock for license acquired	$ 3	4,830		4,832
Issuance of common stock for settlement of debt		1,377		1,377
Issuance of common stock, net of issuance costs	$ 40	97,917		97,957
Issuance of common stock for license acquired, shares	2,570,266
Issuance of common stock, net of issuance costs, shares	39,788,554
Net Income (Loss) Attributable to Parent			(66,048)	(66,048)
Warrants exercised for cash	$ 7	8,401		$ 8,408
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2021	105,500,445			105,500,445
custom:IssuanceOfCommonStockPursuantTo2021SecuritiesPurchaseAgreement	540,147
[custom:IssuanceOfCommonStockForConversionOfDebtShares]	69,065
[custom:IssuanceOfCommonStockForExtinguishmentOfDebtShares]	406,250
Warrants exercised for cash, shares	7,431,125
Net loss			(66,048)	$ (66,048)
Extinguishment of beneficial conversion feature		(1,519)		(1,519)
Issuance of common stock for conversion of debt		138		138
Issuance of common stock, ESPP		104		104
Issuance of common stock, ESPP, shares	80,009
Issuance of common stock, pursuant to 2021     Securities Purchase Agreements	$ 1	1,051		1,052
Ending balance, value at Dec. 31, 2021	$ 105	$ 198,428	$ (141,210)	$ 57,323