Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock		Additional Paid-in Capital	Accumulated Comprehensive Deficit
BALANCE, at beginning of period (in shares) at Dec. 31, 2022	[1]		7,025,000
BALANCE, at beginning of period at Dec. 31, 2022		$ 76,379	$ 7		$ 357,924	$ (281,552)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation recognized on stock options and employee stock purchase plan ("ESPP")		9			9
Restricted stock grants, net of cancellations (in shares)	[1]		158,000
Restricted stock grants, net of cancellations		934			934
Cancellation of shares for payment of withholding tax (in shares)	[1]		(14,000)
Cancellation of shares for payment of withholding tax		(211)			(211)
ESPP shares issued (in shares)	[1]		1,000
ESPP shares issued		8			8
Employee stock purchase plan expense		2			2
Common shares issued in settlement and prepayment of notes payable (in shares)	[1]		405,000
Common shares issued in settlement and prepayment of notes payable		3,650	$ 1		3,649
Net loss		(6,887)				(6,887)
BALANCE, at end of period (in shares) at Mar. 31, 2023	[1]		7,575,000
BALANCE, at end of period at Mar. 31, 2023		$ 73,884	$ 8		362,315	(288,439)
BALANCE, at beginning of period (in shares) at Dec. 31, 2023		9,347,979	9,348,000	[2]
BALANCE, at beginning of period at Dec. 31, 2023		$ 75,390	$ 9		381,329	(305,948)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation recognized on stock options and employee stock purchase plan ("ESPP")		6			6
Restricted stock grants, net of cancellations (in shares)	[2]		266,000
Restricted stock grants, net of cancellations		1,130	$ 1		1,129
Cancellation of shares for payment of withholding tax (in shares)	[2]		(13,000)
Cancellation of shares for payment of withholding tax		(79)			(79)
ESPP shares issued (in shares)	[2]		1,000
ESPP shares issued		2			2
Net loss		$ (31,007)				(31,007)
BALANCE, at end of period (in shares) at Mar. 31, 2024		9,601,504	9,602,000	[2]
BALANCE, at end of period at Mar. 31, 2024		$ 45,442	$ 10		$ 382,387	$ (336,955)

[1] *After giving effect to the Reverse Stock Split.

[2] *After giving effect to the Reverse Stock Split.