CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In-Capital	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2020		53,551,461
Beginning Balance at Dec. 31, 2020	$ 27,135	$ 536	$ 132,492	$ (105,893)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of warrants (in shares)		12,444,887
Issuance of common stock upon exercise of warrants	8,969	$ 124	8,845
Common stock issued, net of issuance costs (in shares)		1,083,548
Issuance of common stock, net of issuance costs of $50	1,628	$ 11	1,617
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes		96,350
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes	(52)	$ 1	(53)
Stock-based compensation	469		469
Net loss	(9,005)			(9,005)
Ending Balance (in shares) at Mar. 31, 2021		67,176,246
Ending Balance at Mar. 31, 2021	$ 29,144	$ 672	143,370	(114,898)
Beginning Balance (in shares) at Dec. 31, 2021	119,377,286	119,377,286
Beginning Balance at Dec. 31, 2021	$ 24,907	$ 1,194	169,080	(145,367)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	551		551
Net loss	$ (9,410)			(9,410)
Ending Balance (in shares) at Mar. 31, 2022	119,377,286	119,377,286
Ending Balance at Mar. 31, 2022	$ 16,048	$ 1,194	$ 169,631	$ (154,777)