UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	At-the-Market Offering	Public Offering	PREFERRED STOCK	COMMON STOCK	COMMON STOCK Pre-funded Warrants	COMMON STOCK At-the-Market Offering	COMMON STOCK Public Offering	ADDITIONAL PAID-IN CAPITAL	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 (Loss) Gain on Available-for-Sale Investments	(3)											(3)
Foreign Currency Translation Adjustments	(4)											(4)
Issuance of Common Stock upon exercise of Pre-Funded Warrants (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)	(5,055)
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 Jun. 30, 2023				15,000
Ending balance at Jun. 30, 2023				$ 0
Ending balance (in shares) at Jun. 30, 2023	16,795,673				16,795,673
Ending balance at Jun. 30, 2023	$ 9,528				$ 2				403,203		(393,814)	137
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 (Loss) Gain on Available-for-Sale Investments	(18)											(18)
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	0
Foreign Currency Translation Adjustments	(1)											(1)
Issuance of 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				16,795,673
Ending balance at Jun. 30, 2023	$ 9,528				$ 2				403,203		(393,814)	137
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 (Loss) Gain on Available-for-Sale Investments	25											25
Issuance of 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)	(1,388)
Reclassification of Realized Gains on Available-for-Sale Debt Instrument Investments Included in Net Income	(25)
Foreign Currency Translation Adjustments	$ (4)
Issuance of Stock, net of offering costs/At-The-Market (in shares)							1,708,379
Ending balance (in shares) at Jun. 30, 2024	15,000			15,000
Ending balance at Jun. 30, 2024	$ 0			$ 0
Ending balance (in shares) at Jun. 30, 2024	31,030,218				31,030,218
Ending balance at Jun. 30, 2024	$ 23,498				$ 3				422,086		(398,586)	(5)
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 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			15,000
Ending balance at Jun. 30, 2024	$ 0			$ 0
Ending balance (in shares) at Jun. 30, 2024	31,030,218				31,030,218
Ending balance at Jun. 30, 2024	$ 23,498				$ 3				$ 422,086		$ (398,586)	$ (5)