UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Public Offering	At-the-Market Offering	PREFERRED STOCK	COMMON STOCK	COMMON STOCK Public Offering	COMMON STOCK At-the-Market Offering	ADDITIONAL PAID-IN CAPITAL	ADDITIONAL PAID-IN CAPITAL Public Offering	ADDITIONAL PAID-IN CAPITAL At-the-Market Offering	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE INCOME
Beginning balance (in shares) at Dec. 31, 2021					8,544,225
Beginning balance at Dec. 31, 2021	$ 2,535				$ 1			$ 372,562			$ (370,080)	$ 52
Increase (Decrease) in Shareholders' Equity
Net Loss	(7,162)										(7,162)
Foreign Currency Translation Adjustments	(1)											(1)
Stock-based Compensation expense	(179)							(179)
Ending balance (in shares) at Mar. 31, 2022				0
Ending balance (in shares) at Mar. 31, 2022					8,544,225
Ending balance at Mar. 31, 2022	(4,807)				$ 1			372,383			(377,242)	51
Beginning balance (in shares) at Dec. 31, 2021					8,544,225
Beginning balance at Dec. 31, 2021	2,535				$ 1			372,562			(370,080)	52
Increase (Decrease) in Shareholders' Equity
Net Loss	(12,128)
Unrealized Loss on Available-for-Sale Investments	0
Foreign Currency Translation Adjustments	$ (3)
Ending balance (in shares) at Jun. 30, 2022				15,000
Ending balance (in shares) at Jun. 30, 2022	9,407,296				9,407,296
Ending balance at Jun. 30, 2022	$ 20,145				$ 1			402,304			(382,209)	49
Beginning balance (in shares) at Mar. 31, 2022				0
Beginning balance (in shares) at Mar. 31, 2022					8,544,225
Beginning balance at Mar. 31, 2022	(4,807)				$ 1			372,383			(377,242)	51
Increase (Decrease) in Shareholders' Equity
Net Loss	(4,967)										(4,967)
Unrealized Loss on Available-for-Sale Investments	0
Foreign Currency Translation Adjustments	(2)											(2)
Issuance of stock, net of offering costs (in shares)				15,000		844,613	7,500
Issuance of stock, net of offering costs (in dollars)	14,916	$ 14,893	$ 15					14,916	$ 14,893	$ 15
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)					10,958
Stock-based Compensation expense	$ 97							97
Ending balance (in shares) at Jun. 30, 2022				15,000
Ending balance (in shares) at Jun. 30, 2022	9,407,296				9,407,296
Ending balance at Jun. 30, 2022	$ 20,145				$ 1			402,304			(382,209)	49
Beginning balance (in shares) at Dec. 31, 2022	15,000			15,000
Beginning balance (in shares) at Dec. 31, 2022	12,163,673				12,163,673
Beginning balance at Dec. 31, 2022	$ 14,106				$ 1			402,701			(388,759)	163
Increase (Decrease) in Shareholders' Equity
Net Loss	(1,750)										(1,750)	0
Unrealized Loss on Available-for-Sale Investments	(3)											(3)
Foreign Currency Translation Adjustments	(4)											(4)
Issuance of common stock upon exercise of prefunded warrants (in shares)					389,000
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)					125,000
Stock-based Compensation expense	193							193
Ending balance (in shares) at Mar. 31, 2023				15,000
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			15,000
Beginning balance (in shares) at Dec. 31, 2022	12,163,673				12,163,673
Beginning balance at Dec. 31, 2022	$ 14,106				$ 1			402,701			(388,759)	163
Increase (Decrease) in Shareholders' Equity
Net Loss	(5,055)
Unrealized Loss on Available-for-Sale Investments	(21)
Foreign Currency Translation Adjustments	$ (4)
Ending balance (in shares) at Jun. 30, 2023	15,000			15,000
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 (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 Loss	(3,305)										(3,305)
Unrealized Loss on Available-for-Sale Investments	(18)											(18)
Foreign Currency Translation Adjustments	(1)											(1)
Issuance of common stock upon exercise of prefunded warrants (in shares)					4,118,000
Issuance of Common Stock upon exercise of Pre-Funded Warrants	1				$ 1
Stock-based Compensation expense	$ 309							309
Ending balance (in shares) at Jun. 30, 2023	15,000			15,000
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