UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Prior Warrants and Pre-funded Warrants	At-the-Market Offering	Public Offering	PREFERRED STOCK	COMMON STOCK	COMMON STOCK Prior Warrants and Pre-funded Warrants	COMMON STOCK Pre-funded Warrants	COMMON STOCK At-the-Market Offering	COMMON STOCK Public Offering	ADDITIONAL PAID-IN CAPITAL	ADDITIONAL PAID-IN CAPITAL Prior Warrants and Pre-funded Warrants	ADDITIONAL PAID-IN CAPITAL At-the-Market Offering	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME
Beginning balance (in shares) at Dec. 31, 2022					15,000
Beginning balance at Dec. 31, 2022					$ 0
Beginning balance (in shares) at Dec. 31, 2022						12,163,673
Beginning balance at Dec. 31, 2022	$ 14,106					$ 1					$ 402,701			$ (388,759)	$ 163
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	(1,750)													(1,750)
Unrealized Gain (Loss) on Available-for-Sale Investments	(3)														(3)
Foreign Currency Translation Adjustments	(4)														(4)
Issuance of Common Stock upon Exercise of Options, in Connection with Exercise of the Prior Warrant and Pre-Funded Warrants, net of offering costs (in shares)								389,000
Stock-based Compensation	193										193
Ending balance (in shares) at Mar. 31, 2023					15,000
Ending balance at Mar. 31, 2023					$ 0
Ending balance (in shares) at Mar. 31, 2023						12,552,673
Ending balance at Mar. 31, 2023	12,542					$ 1					402,894			(390,509)	156
Beginning balance (in shares) at Dec. 31, 2022					15,000
Beginning balance at Dec. 31, 2022					$ 0
Beginning balance (in shares) at Dec. 31, 2022						12,163,673
Beginning balance at Dec. 31, 2022	14,106					$ 1					402,701			(388,759)	163
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	(6,927)
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	0
Foreign Currency Translation Adjustments	$ (4)
Ending balance (in shares) at Sep. 30, 2023					15,000
Ending balance at Sep. 30, 2023					$ 0
Ending balance (in shares) at Sep. 30, 2023	28,489,663					28,489,663
Ending balance at Sep. 30, 2023	$ 21,518					$ 3					417,133			(395,686)	68
Beginning balance (in shares) at Mar. 31, 2023					15,000
Beginning balance at Mar. 31, 2023					$ 0
Beginning balance (in shares) at Mar. 31, 2023						12,552,673
Beginning balance at Mar. 31, 2023	12,542					$ 1					402,894			(390,509)	156
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	(3,305)													(3,305)
Unrealized Gain (Loss) on Available-for-Sale Investments	(18)														(18)
Foreign Currency Translation Adjustments	(1)														(1)
Issuance of Common Stock, net of offering costs/At-The-Market (in shares)										4,118,000
Issuance of Common Stock, net of offering costs/At-The-Market				$ 1						$ 1
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)						125,000
Stock-based Compensation	309										309
Ending balance (in shares) at Jun. 30, 2023					15,000
Ending balance at Jun. 30, 2023					$ 0
Ending balance (in shares) at Jun. 30, 2023						16,795,673
Ending balance at Jun. 30, 2023	9,528					$ 2					403,203			(393,814)	137
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	(1,872)													(1,872)
Unrealized Gain (Loss) on Available-for-Sale Investments	(69)														(69)
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	0
Foreign Currency Translation Adjustments	0
Issuance of Common Stock upon Exercise of Options, in Connection with Exercise of the Prior Warrant and Pre-Funded Warrants, net of offering costs (in shares)							11,693,990
Issuance of Common Stock in Connection with Exercise of the Prior Warrant and Pre-Funded Warrants, net of offering costs		$ 13,719					$ 1					$ 13,718
Stock-based Compensation	$ 212										212
Ending balance (in shares) at Sep. 30, 2023					15,000
Ending balance at Sep. 30, 2023					$ 0
Ending balance (in shares) at Sep. 30, 2023	28,489,663					28,489,663
Ending balance at Sep. 30, 2023	$ 21,518					$ 3					417,133			(395,686)	68
Beginning balance (in shares) at Dec. 31, 2023	15,000				15,000
Beginning balance at Dec. 31, 2023	$ 0				$ 0
Beginning balance (in shares) at Dec. 31, 2023	29,130,607					29,130,607
Beginning balance at Dec. 31, 2023	$ 21,291					$ 3					418,487			(397,198)	(1)
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	(1,731)													(1,731)
Unrealized Gain (Loss) on Available-for-Sale Investments	25														25
Issuance of Common Stock, net of offering costs/At-The-Market (in shares)									358,210
Issuance of Common Stock, net of offering costs/At-The-Market			$ 560										$ 560
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)						67,657
Issuance of Warrant in connection with the Third Amendment (Note 11)	247										247
Stock-based Compensation	251										251
Ending balance (in shares) at Mar. 31, 2024					15,000
Ending balance at Mar. 31, 2024					$ 0
Ending balance (in shares) at Mar. 31, 2024						29,556,474
Ending balance at Mar. 31, 2024	$ 20,643					$ 3					419,545			(398,929)	24
Beginning balance (in shares) at Dec. 31, 2023	15,000				15,000
Beginning balance at Dec. 31, 2023	$ 0				$ 0
Beginning balance (in shares) at Dec. 31, 2023	29,130,607					29,130,607
Beginning balance at Dec. 31, 2023	$ 21,291					$ 3					418,487			(397,198)	(1)
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	276
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	(25)
Foreign Currency Translation Adjustments	$ (4)
Issuance of Common Stock, net of offering costs/At-The-Market (in shares)									2,990,925
Ending balance (in shares) at Sep. 30, 2024	15,000				15,000
Ending balance at Sep. 30, 2024	$ 0				$ 0
Ending balance (in shares) at Sep. 30, 2024	32,318,806					32,318,806
Ending balance at Sep. 30, 2024	$ 29,135					$ 3					426,046			(396,922)	8
Beginning balance (in shares) at Mar. 31, 2024					15,000
Beginning balance at Mar. 31, 2024					$ 0
Beginning balance (in shares) at Mar. 31, 2024						29,556,474
Beginning balance at Mar. 31, 2024	20,643					$ 3					419,545			(398,929)	24
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	343													343
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	(25)														(25)
Foreign Currency Translation Adjustments	(4)														(4)
Issuance of Common Stock, net of offering costs/At-The-Market (in shares)									1,350,169
Issuance of Common Stock, net of offering costs/At-The-Market			2,203										2,203
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)						123,575
Stock-based Compensation	338										338
Ending balance (in shares) at Jun. 30, 2024					15,000
Ending balance at Jun. 30, 2024					$ 0
Ending balance (in shares) at Jun. 30, 2024						31,030,218
Ending balance at Jun. 30, 2024	23,498					$ 3					422,086			(398,586)	(5)
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)	1,664													1,664
Unrealized Gain (Loss) on Available-for-Sale Investments	13														13
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	0
Foreign Currency Translation Adjustments	0
Issuance of Common Stock, net of offering costs/At-The-Market (in shares)									1,282,546
Issuance of Common Stock, net of offering costs/At-The-Market			$ 3,630										$ 3,630
Issuance of Common Stock upon Exercise of Options (in shares)						6,042
Issuance of Common Stock upon Exercise of Options		$ 9									9
Stock-based Compensation	$ 321										321
Ending balance (in shares) at Sep. 30, 2024	15,000				15,000
Ending balance at Sep. 30, 2024	$ 0				$ 0
Ending balance (in shares) at Sep. 30, 2024	32,318,806					32,318,806
Ending balance at Sep. 30, 2024	$ 29,135					$ 3					$ 426,046			$ (396,922)	$ 8