Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock.	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Beginning Balance at Dec. 31, 2020	$ 1	$ 123,872	$ (118,903)	$ (1,099)	$ 3,871
Beginning Balance, Shares at Dec. 31, 2020	1,484,362
Issuance of common stock in public offering	$ 1	8,398			8,399
Issuance of common stock in public offering (in shares)	744,936
Issuance of warrants in public offering		2,638			2,638
Share issuance costs		(1,608)			(1,608)
Share issuance costs, Shares	31,958
Exercise of warrants		1,318			1,318
Exercise of warrants (in shares)	81,895
Exercise of stock options		2			2
Exercise of stock options (in shares)	214
Common stock issued under equity line of credit		577			577
Common stock issued under equity line of credit (in shares)	40,000
Settlement of restricted stock units (in shares)	3,428
Stock-based compensation		3,896			3,896
Stock-based compensation (in shares)	5,337
Other comprehensive income				(26)	(26)
Net loss			(14,030)		(14,030)
Ending Balance at Sep. 30, 2021	$ 2	139,093	(132,933)	(1,125)	5,037
Ending Balance (in shares) at Sep. 30, 2021	2,392,130
Beginning Balance at Jun. 30, 2021	$ 2	138,023	(128,246)	(1,412)	8,367
Beginning Balance, Shares at Jun. 30, 2021	2,317,772
Share issuance costs		(247)			(247)
Share issuance costs, Shares	31,958
Common stock issued under equity line of credit		577			577
Common stock issued under equity line of credit (in shares)	40,000
Settlement of restricted stock units (in shares)	2,400
Stock-based compensation		740			740
Other comprehensive income				287	287
Net loss			(4,687)		(4,687)
Ending Balance at Sep. 30, 2021	$ 2	139,093	(132,933)	(1,125)	5,037
Ending Balance (in shares) at Sep. 30, 2021	2,392,130
Beginning Balance at Dec. 31, 2021	$ 4	149,412	(137,035)	(1,125)	11,256
Beginning Balance, Shares at Dec. 31, 2021	3,780,674
Issuance of common stock in public offering	$ 24	8,032			8,056
Issuance of common stock in public offering (in shares)	24,000,000
Share issuance costs		(758)			(758)
Common stock issued under equity line of credit		644			644
Common stock issued under equity line of credit (in shares)	391,363
Settlement of restricted stock units (in shares)	12,443
Common stock issued for services		34			$ 34
Common stock issued for services (in shares)	8,791				8,791
Stock-based compensation		2,022			$ 2,022
Stock-based compensation (in shares)	8,011
Other comprehensive income				893	893
Net loss			(9,186)		(9,186)
Ending Balance at Sep. 30, 2022	$ 28	159,386	(146,221)	(232)	12,961
Ending Balance (in shares) at Sep. 30, 2022	28,201,282
Beginning Balance at Jun. 30, 2022	$ 4	150,665	(145,191)	(976)	4,502
Beginning Balance, Shares at Jun. 30, 2022	4,195,113
Issuance of common stock in public offering	$ 24	8,032			8,056
Issuance of common stock in public offering (in shares)	24,000,000
Share issuance costs		(752)			(752)
Settlement of restricted stock units (in shares)	6,169
Stock-based compensation		1,441			1,441
Other comprehensive income				744	744
Net loss			(1,030)		(1,030)
Ending Balance at Sep. 30, 2022	$ 28	$ 159,386	$ (146,221)	$ (232)	$ 12,961
Ending Balance (in shares) at Sep. 30, 2022	28,201,282