Consolidated Statements Of Redeemable Preferred Stock and Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Series F Convertible Preferred Stock	Series H Convertible Preferred Stock	Series J Convertible Redeemable Preferred Stock	Common Stock	Common Stock Series H Convertible Preferred Stock	Common Stock Series J Convertible Redeemable Preferred Stock	Additional Paid-in Capital	Additional Paid-in Capital Series F Convertible Preferred Stock	Additional Paid-in Capital Series H Convertible Preferred Stock	Additional Paid-in Capital Series J Convertible Redeemable Preferred Stock	Convertible Preferred Stock Series F Convertible Preferred Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit	Mezzanine Equity Series G Redeemable Preferred Stock	Mezzanine Equity Series H Convertible Preferred Stock	Mezzanine Equity Series I Redeemable Preferred Stock	Mezzanine Equity Series J Convertible Redeemable Preferred Stock
Balance (in shares) at Dec. 31, 2021					62,000
Beginning balance at Dec. 31, 2021	$ 25,208							$ 293,331				$ 34	$ (623)	$ (267,534)
Issuance of Series G Redeemable Preferred Stock, shares															154,000
Conversion of Series Convertible Preferred Stock, Amount									$ 251			(251)
Sale of common stock and pre-funded warrants, net of fees ,Amount	5,635							5,635
Sale of common stock and pre-funded warrants, net of fees, shares					7,000
Redemption of Series Redeemable Preferred Stock, shares															(154,000)
Deemed dividend on Series F Convertible Preferred Stock	217								$ (217)			$ 217
Stock-based compensation	1,607							1,607
Issuance of stock from RSUs, net, shares					1,000
Liability award reclass	596							596
Exercise of common stock warrants, shares					2,000
Net loss	(18,773)													(18,773)
Foreign currency translation adjustments	(415)												(415)
Ending balance, shares( preferred) at Sep. 30, 2022															0
Ending Balance (in shares) at Sep. 30, 2022					72,000
Ending balance at Sep. 30, 2022	13,858							301,203					(1,038)	(286,307)
Balance (in shares) at Jun. 30, 2022					69,000
Beginning balance at Jun. 30, 2022	21,615							300,421					(886)	(277,920)
Sale of common stock and pre-funded warrants, net of fees ,Amount	(214)							214
Deemed dividend on Series F Convertible Preferred Stock	0
Stock-based compensation	996							996
Issuance of stock from RSUs, net, shares					1,000
Exercise of common stock warrants, shares					2,000
Net loss	(8,387)													(8,387)
Foreign currency translation adjustments	(152)												(152)
Ending balance, shares( preferred) at Sep. 30, 2022															0
Ending Balance (in shares) at Sep. 30, 2022					72,000
Ending balance at Sep. 30, 2022	$ 13,858							301,203					(1,038)	(286,307)
Balance (in shares) at Dec. 31, 2022	77,000				77,000
Beginning balance at Dec. 31, 2022	$ 4,889							301,790					733	(296,168)
TemporaryEquitySharesOutstanding begening at Dec. 31, 2022		0
Conversion of Series H Convertible Preferred Stock ,Shares																7,000
Temporary Equity Shares Ending Balance at Sep. 30, 2023																$ 300		$ 5,252
Conversion of Series H Convertible Preferred Stock ,Amount																$ 420
Issuance of Series Convertible Preferred Stock, net of fees(Shares)																175,000		75,000
Issuance of Series Convertible Preferred Stock, net of fees,Amount	7,611		$ (9,345)					7,611		$ (9,345)						$ 12,115	$ 85	$ 10,330
Redemption of Series I Redeemable Preferred Stock ( shares)																	(85,000)
Conversion of Series Convertible Preferred Stock, Amount			13,015	$ 5,488	$ 1		$ 1			13,014	$ 5,487					$ (13,015)		$ (5,488)
Conversion of Series Convertible Preferred Stock, shares					680,000		1,222,000									(190,000)		(40,000)
Sale of common stock and pre-funded warrants, net of fees ,Amount	8,503							8,503
Sale of common stock and pre-funded warrants, net of fees, shares					172,000
Deemed dividend on Series F Convertible Preferred Stock	0
Stock-based compensation	1,149							1,149
Issuance of stock from RSUs, net, shares					1,000
Exercise of common stock warrants	114							114
Exercise of common stock warrants, shares					114,000
Exercise of Series Convertible Preferred Stock Warrants (Shares)																20,000		3,000
Exercise of Series Convertible Preferred Stock Warrants, Amount			$ (430)	$ 148						(430)	$ 148					$ 1,200		$ 410
Net loss	(15,306)													(15,306)
Foreign currency translation adjustments	14												(14)
Ending Balance,( preferred) at Sep. 30, 2023	$ 5,552															5		38
Ending balance, shares( preferred) at Sep. 30, 2023		0	5,000
Ending Balance (in shares) at Sep. 30, 2023	2,266,000				2,266,000
Ending balance at Sep. 30, 2023	$ 332				$ 2			312,523					719	(311,474)
Temporary Equity Shares Outstanding , Amount																$ 720
Balance (in shares) at Jun. 30, 2023					1,019,000
Beginning balance at Jun. 30, 2023	6,621				$ 1			314,119					(614)	(306,885)			$ 85
TemporaryEquitySharesOutstanding begening at Jun. 30, 2023																12,000
Temporary Equity Shares Ending Balance at Sep. 30, 2023																$ 300		$ 5,252
Conversion of Series H Convertible Preferred Stock ,Amount	420							420
Issuance of Series Convertible Preferred Stock, net of fees(Shares)																		75,000
Issuance of Series Convertible Preferred Stock, net of fees,Amount	(7,611)		$ 32					(7,611)		$ 32								$ 10,330
Redemption of Series I Redeemable Preferred Stock ( shares)																	(85,000)
Conversion of Series Convertible Preferred Stock, Amount	5,488				$ 1			5,487										$ (5,488)
Conversion of Series Convertible Preferred Stock, shares						25,000	1,222,000											(40,000)
Deemed dividend on Series F Convertible Preferred Stock	0
Stock-based compensation	224							224
Exercise of Series Convertible Preferred Stock Warrants (Shares)																		3,000
Exercise of Series Convertible Preferred Stock Warrants, Amount	(148)							(148)										$ 410
Net loss	(4,589)													(4,589)
Foreign currency translation adjustments	(105)												(105)
Ending Balance,( preferred) at Sep. 30, 2023	$ 5,552															$ 5		$ 38
Ending balance, shares( preferred) at Sep. 30, 2023		0	5,000
Ending Balance (in shares) at Sep. 30, 2023	2,266,000				2,266,000
Ending balance at Sep. 30, 2023	$ 332				$ 2			$ 312,523					$ 719	$ (311,474)