CONSOLIDATED STATEMENTS OF (DEFICIT) EQUITY - USD ($) $ in Thousands	Series A Convertible Preferred Stock Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income	Accumulated Deficit	Total
Balance Beginning at Dec. 31, 2022	$ 4,043	$ 50	$ 542,428			$ (430,521)	$ 116,000
Balance Beginning (in shares) at Dec. 31, 2022	4,300	49,642,767		7,307
Increase (Decrease) in Stockholders' Equity (Deficit)
Stock-based compensation expense			3,741				3,741
Net issuance of common stock in connection with the vesting of restricted stock (in shares)		22,350
Unrealized gain on short-term investments					$ 74		74
Net Income (Loss)						(34,730)	(34,730)
Balance Ending at Mar. 31, 2023	$ 4,043	$ 50	546,169		74	(465,251)	85,085
Balance Ending (in shares) at Mar. 31, 2023	4,300	49,665,117		7,307
Balance Beginning at Dec. 31, 2023		$ 55	588,656		(20)	(571,926)	16,765
Balance Beginning (in shares) at Dec. 31, 2023		54,578,121		7,307
Increase (Decrease) in Stockholders' Equity (Deficit)
Stock-based compensation expense			5,193				5,193
Exercise of stock options			257				257
Exercise of stock options (in shares)		57,665
Net issuance of common stock in connection with the vesting of restricted stock (in shares)		295,256
Unrealized gain on short-term investments					$ 20		20
Net Income (Loss)						(38,669)	(38,669)
Balance Ending at Mar. 31, 2024		$ 55	$ 594,106			$ (610,595)	$ (16,434)
Balance Ending (in shares) at Mar. 31, 2024		54,931,042		7,307