CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid In Capital	Accumulated Deficit
Balance at Dec. 31, 2021	$ 58,057	$ 216	$ 900,693	$ (842,852)
Balance (in shares) at Dec. 31, 2021		216,127,443
Stock-based compensation	2,651		2,651
Restricted stock awards (in shares)		280,000
Cancelled restricted common stock (in shares)		(232,901)
Exercise of employee stock options	21		21
Exercise of employee stock options (in shares)		26,250
Repurchase of common stock	(45)			(45)
Repurchase of common stock (in Shares)		(18,750)
Net loss	(28,571)			(28,571)
Balance at Sep. 30, 2022	32,113	$ 216	903,365	(871,468)
Balance (in shares) at Sep. 30, 2022		216,182,042
Balance at Jun. 30, 2022	40,180	$ 216	902,536	(862,572)
Balance (in shares) at Jun. 30, 2022		216,174,542
Stock-based compensation	808		808
Exercise of employee stock options	21		21
Exercise of employee stock options (in shares)		26,250
Repurchase of common stock	(45)			(45)
Repurchase of common stock (in Shares)		(18,750)
Net loss	(8,851)			(8,851)
Balance at Sep. 30, 2022	32,113	$ 216	903,365	(871,468)
Balance (in shares) at Sep. 30, 2022		216,182,042
Balance at Dec. 31, 2022	38,555	$ 240	918,942	(880,627)
Balance (in shares) at Dec. 31, 2022		240,410,761
Stock-based compensation	2,550		2,550
Issuance of common stock, net of expenses (in shares)		216,294
Issuance of common stock, net of expenses	92	$ 1	91
Net loss	(27,297)			(27,297)
Balance at Sep. 30, 2023	13,900	$ 241	921,583	(907,924)
Balance (in shares) at Sep. 30, 2023		240,627,055
Balance at Jun. 30, 2023	21,650	$ 241	920,857	(899,448)
Balance (in shares) at Jun. 30, 2023		240,627,055
Stock-based compensation	726		726
Net loss	(8,476)			(8,476)
Balance at Sep. 30, 2023	$ 13,900	$ 241	$ 921,583	$ (907,924)
Balance (in shares) at Sep. 30, 2023		240,627,055