UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - 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				0
Beginning balance at Dec. 31, 2021				$ 0
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	(179)							(179)
Ending balance (in shares) at Mar. 31, 2022				0
Ending balance 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				0
Beginning balance at Dec. 31, 2021				$ 0
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	(16,317)
Unrealized Gain (Loss) on Available-for-Sale Investments	5
Foreign Currency Translation Adjustments	$ (3)
Ending balance (in shares) at Sep. 30, 2022				15,000
Ending balance at Sep. 30, 2022				$ 0
Ending balance (in shares) at Sep. 30, 2022	11,152,673				11,152,673
Ending balance at Sep. 30, 2022	$ 16,136				$ 1			402,480			(386,399)	54
Beginning balance (in shares) at Mar. 31, 2022				0
Beginning balance 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)
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	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	97							97
Ending balance (in shares) at Jun. 30, 2022				15,000
Ending balance at Jun. 30, 2022				$ 0
Ending balance (in shares) at Jun. 30, 2022					9,407,296
Ending balance at Jun. 30, 2022	20,145				$ 1			402,304			(382,209)	49
Increase (Decrease) in Shareholders' Equity
Net Loss	(4,190)										(4,190)
Unrealized Gain (Loss) on Available-for-Sale Investments	5											5
Foreign Currency Translation Adjustments	0
Issuance of stock, net of offering costs (in shares)						1,745,377
Issuance of stock, net of offering costs		$ 0				$ 0			$ 0
Stock-based Compensation	$ 176							176
Ending balance (in shares) at Sep. 30, 2022				15,000
Ending balance at Sep. 30, 2022				$ 0
Ending balance (in shares) at Sep. 30, 2022	11,152,673				11,152,673
Ending balance at Sep. 30, 2022	$ 16,136				$ 1			402,480			(386,399)	54
Beginning balance (in shares) at Dec. 31, 2022	15,000			15,000
Beginning balance at Dec. 31, 2022	$ 0			$ 0
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)
Unrealized Gain (Loss) on Available-for-Sale Investments	(3)											(3)
Foreign Currency Translation Adjustments	(4)											(4)
Issuance of Common Stock 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			15,000
Beginning balance at Dec. 31, 2022	$ 0			$ 0
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	(6,927)
Unrealized Gain (Loss) on Available-for-Sale Investments	(90)
Foreign Currency Translation Adjustments	$ (4)
Ending balance (in shares) at Sep. 30, 2023	15,000			15,000
Ending balance at Sep. 30, 2023	$ 0			$ 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 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 in connection with exercise of the Prior Warrant and Pre-Funded Warrants, net of offering costs (in shares)					4,118,000
Issuance of Common Stock in connection with exercise of Prior Warrant and Pre-Funded Warrants, net of offering costs	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 Loss	(1,872)										(1,872)
Unrealized Gain (Loss) on Available-for-Sale Investments	(69)											(69)
Foreign Currency Translation Adjustments	0
Issuance of Common Stock 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 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			15,000
Ending balance at Sep. 30, 2023	$ 0			$ 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