Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	January 2021 PIPE [Member]	Common Stock [Member]	Common Stock [Member] January 2021 PIPE [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] January 2021 PIPE [Member]	Accumulated Deficit [Member]	Non-Controlling Interest [Member]
Stockholders Equity, Beginning Balance at Dec. 31, 2020	$ 28,552		$ 54		$ 239,496		$ (211,825)	$ 827
Stockholders Equity, Beginning Balance, Shares at Dec. 31, 2020			13,450,861
Issuance of shares		$ 15,516		$ 8		$ 15,508
Issuance of shares, Shares				7,876,784
Offering costs		(2,084)				(2,084)
Issuance of placement agent warrants		$ 942				$ 942
Issuance of shares related to employee stock purchase plan	21				21
Issuance of shares related to employee stock purchase plan, Shares			8,604
Stock-based compensation	325				325
Non-controlling interest contributions	750							750
Net (loss) income	1,681						2,058	(377)
Stockholders Equity, Ending Balance at Mar. 31, 2021	45,703		$ 62		254,208		(209,767)	1,200
Stockholders Equity, Ending Balance, Shares at Mar. 31, 2021			21,336,249
Stockholders Equity, Beginning Balance at Dec. 31, 2020	$ 28,552		$ 54		239,496		(211,825)	827
Stockholders Equity, Beginning Balance, Shares at Dec. 31, 2020			13,450,861
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Net (loss) income	$ (16,100)
Stockholders Equity, Ending Balance at Dec. 31, 2021	31,196		$ 63		257,515		(226,485)	103
Stockholders Equity, Ending Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021	3,392				19,390		(15,998)
Stockholders Equity, Ending Balance, Shares at Dec. 31, 2021			22,184,235
Issuance of shares related to employee stock purchase plan	4				4
Issuance of shares related to employee stock purchase plan, Shares			4,683
Stock-based compensation	260				260
Net (loss) income	(4,610)						(4,488)	(122)
Stockholders Equity, Ending Balance at Mar. 31, 2022	$ 30,242		$ 63		$ 277,169		$ (246,971)	$ (19)
Stockholders Equity, Ending Balance, Shares at Mar. 31, 2022			22,188,918