Consolidated Statements of Changes in Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2019		4,220,998
Beginning balance at Dec. 31, 2019	$ (122,253)		$ 22,404	$ (143,915)	$ (742)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)	6,821	6,821
Stock options exercised	$ 27		27
Conversion of preferred shares in connection with the Reverse Merger (in shares)		23,933,949
Conversion of preferred shares in connection with the Reverse Merger	85,658	$ 3	85,655
Shares redeemed in connection with the Reverse Merger (in shares)		(52,773)
Shares redeemed in connection with the Reverse Merger	(211)		(211)
Shares issued in connection with the Reverse Merger (in shares)		1,650,000
Shares issued in connection with the Reverse Merger	(50)		(50)
Issuance of common stock (in shares)		10,380,000
Issuance of common stock	33,387	$ 1	33,386
Restricted stock awards issued (in shares)		139,501
Stock-based compensation	1,525		1,525
Other comprehensive loss	(30)				(30)
Net loss	(17,909)			(17,909)
Ending balance (in shares) at Dec. 31, 2020		40,278,496
Ending balance at Dec. 31, 2020	$ (19,856)	$ 4	142,736	(161,824)	(772)
Beginning balance (in shares) at Feb. 11, 2020	50,325,662
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued in connection with the Reverse Merger (in shares)	1,650,000
Ending balance (in shares) at Feb. 12, 2020	4,171,571
Beginning balance (in shares) at Dec. 31, 2020		40,278,496
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)	500	500
Stock options exercised	$ 2		2
Issuance of common stock (in shares)		250,000
Issuance of common stock	950		950
Restricted stock awards issued (in shares)		3,000
Stock-based compensation	513		513
Other comprehensive loss	(85)				(85)
Net loss	$ (6,579)			(6,579)
Ending balance (in shares) at Mar. 31, 2021	40,531,996	40,531,996
Ending balance at Mar. 31, 2021	$ (25,055)	$ 4	144,201	(168,403)	(857)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)	52,799	52,799
Stock options exercised	$ 221		221
Conversion of preferred shares in connection with the Reverse Merger (in shares)		3,120,000
Conversion of preferred shares in connection with the Reverse Merger	14,378		14,378
Issuance of common stock (in shares)		9,370,251
Issuance of common stock	50,273	$ 1	50,272
Stock-based compensation	2,614		2,614
Restricted stock units vested (in shares)		305,982
Restricted stock units surrendered due to net share settlement to satisfy employee tax liability (in shares)		(97,249)
Restricted stock units surrendered due to net share settlement to satisfy employee tax liability	(768)		(768)
Stock warrants exercised (in shares)		95,528
Stock warrants exercised	272		272
Other comprehensive loss	(339)				(339)
Net loss	$ (10,235)			(10,235)
Ending balance (in shares) at Mar. 31, 2022	53,379,307	53,379,307
Ending balance at Mar. 31, 2022	$ 31,361	$ 5	$ 211,190	$ (178,638)	$ (1,196)