UNAUDITED 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, 2021			60,433,455
Beginning balance at Dec. 31, 2021		$ (68,494)	$ 6	$ 540,823	$ (609,323)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and warrants - Note 14 (in shares)			136,370,064
Issuance of common stock and warrants – Note 14		189,412	$ 14	189,398
Stock-based compensation costs		391		391
Vesting of restricted stock units		37		37
Net loss		(22,060)			(22,060)
Ending balance (in shares) at Mar. 31, 2022			196,803,519
Ending balance at Mar. 31, 2022		99,286	$ 20	730,649	(631,383)
Beginning balance (in shares) at Dec. 31, 2022	[1]		200,270,659
Beginning balance at Dec. 31, 2022		63,306	$ 20	733,437	(670,151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation costs		608		608
5-Year Private Warrants transferred to 5-Year Public Warrants		531		531
Net loss		(13,909)			(13,909)
Ending balance (in shares) at Mar. 31, 2023			200,270,659
Ending balance at Mar. 31, 2023		$ 50,536	$ 20	$ 734,576	$ (684,060)

[1] The opening balance of Shares of Common Stock outstanding for both periods presented reflects an increase of 60 shares of common stock for an adjustment made to the Company’s share ledger by its recordkeeper related to a transaction that occurred in May 2020.