CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		59,901,306
Beginning balance at Dec. 31, 2020	$ 16,617	$ 6	$ 537,370	$ (520,759)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units	115		115
Stock-based compensation costs	507		507
Net loss	(9,688)			(9,688)
Ending balance (in shares) at Mar. 31, 2021		59,901,306
Ending balance at Mar. 31, 2021	7,551	$ 6	537,992	(530,447)
Beginning balance (in shares) at Dec. 31, 2020		59,901,306
Beginning balance at Dec. 31, 2020	16,617	$ 6	537,370	(520,759)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance - other	0
Net loss	(18,115)
Ending balance (in shares) at Jun. 30, 2021		59,964,980
Ending balance at Jun. 30, 2021	419	$ 6	539,287	(538,874)
Beginning balance (in shares) at Mar. 31, 2021		59,901,306
Beginning balance at Mar. 31, 2021	7,551	$ 6	537,992	(530,447)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units (in shares)		63,674
Vesting of restricted stock units	0
Stock-based compensation costs	1,011		1,011
5-Year Private Warrants transferred to 5-Year Public Warrants	284		284
Net loss	(8,427)			(8,427)
Ending balance (in shares) at Jun. 30, 2021		59,964,980
Ending balance at Jun. 30, 2021	419	$ 6	539,287	(538,874)
Beginning balance (in shares) at Dec. 31, 2021		60,433,395
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 (in shares)		136,370,064
Issuance of common stock and warrants	189,412	$ 14	189,398
Vesting of restricted stock units	37		37
Stock-based compensation costs	391		391
Net loss	(22,060)			(22,060)
Ending balance (in shares) at Mar. 31, 2022		196,803,459
Ending balance at Mar. 31, 2022	99,286	$ 20	730,649	(631,383)
Beginning balance (in shares) at Dec. 31, 2021		60,433,395
Beginning balance at Dec. 31, 2021	(68,494)	$ 6	540,823	(609,323)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance - other	158
Net loss	(31,042)
Ending balance (in shares) at Jun. 30, 2022		197,401,817
Ending balance at Jun. 30, 2022	88,895	$ 20	729,240	(640,365)
Beginning balance (in shares) at Mar. 31, 2022		196,803,459
Beginning balance at Mar. 31, 2022	99,286	$ 20	730,649	(631,383)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and warrants	(2,226)		(2,226)
Vesting of restricted stock units (in shares)		460,858
Vesting of restricted stock units	40		40
Stock issuance - other (in shares)		137,500
Stock issuance - other	158		158
Stock-based compensation costs	619		619
Net loss	(8,982)			(8,982)
Ending balance (in shares) at Jun. 30, 2022		197,401,817
Ending balance at Jun. 30, 2022	$ 88,895	$ 20	$ 729,240	$ (640,365)