Condensed Consolidated Statements of Equity (Unaudited) - USD ($)	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member] Related Party Convertible Debt Price Reset [Member]	Common Stock [Member] At The Market Offering Agreement [Member]	Common Stock [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member] Related Party Convertible Debt Price Reset [Member]	Additional Paid-in Capital [Member] At The Market Offering Agreement [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Related Party Convertible Debt Price Reset [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	AOCI Attributable to Parent [Member] Related Party Convertible Debt Price Reset [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member] Related Party Convertible Debt Price Reset [Member]	Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Related Party Convertible Debt Price Reset [Member]	At The Market Offering Agreement [Member]	Total
Balance at January 1, 2023 (in shares) (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021	0
Balance at January 1, 2023 (in shares) at Dec. 31, 2021				279,629
Balance at January 1, 2023 (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021	$ 0				$ (10,681,000)				$ 9,739,000			$ 0			$ 0			$ (942,000)
Balance at January 1, 2023 at Dec. 31, 2021				$ 0				$ 268,459,000			$ (264,662,000)			$ 31,000			$ (431,000)				$ 3,397,000
Stock-based compensation expense								42,000													42,000
Related party convertible note price reset						$ 213,000													$ 213,000		0
Sale of common stock and warrants, net (in shares)			20,407																	20,407
Sale of common stock and warrants, net			$ 0				$ 594,000													$ 594,000
Foreign currency translation gain														14,000							14,000
Net loss											(1,910,000)						(126,000)				(2,036,000)
Related party convertible note price reset						213,000													213,000		0
Balance at March 31, 2023 (in shares) at Mar. 31, 2022				300,036
Balance at March 31, 2023 at Mar. 31, 2022				$ 0				258,627,000			(256,833,000)			45,000			(557,000)				1,282,000
Balance at January 1, 2023 (in shares) at Dec. 31, 2022				1,037,138
Balance at January 1, 2023 at Dec. 31, 2022				$ 1,000				270,377,000			(266,193,000)			111,000			(973,000)				3,323,000
Stock-based compensation expense								10,000													10,000
Related party convertible note price reset		$ 0		$ 0		3,160,000		43,000		$ 0	0		$ 0	0		$ 0	0		3,160,000		43,000
Conversion of note payable to common stock (in shares)				215,000
Conversion of note payable to common stock				$ 1,000				602,000			0			0			0				603,000
Sale of common stock and warrants, net (in shares)				125,000
Sale of common stock and warrants, net				$ 0				2,640,000			0			0			0				2,640,000
Exercise of warrants (in shares)				158,731
Exercise of warrants				$ 0				421,000			0			0			0				421,000
Foreign currency translation gain														(6,000)							(6,000)
Net loss											(5,086,000)						(96,000)				(5,182,000)
Related party convertible note price reset		$ 0		$ 0		$ 3,160,000		43,000		$ 0	0		$ 0	0		$ 0	0		$ 3,160,000		43,000
Balance at March 31, 2023 (in shares) at Mar. 31, 2023				1,535,869
Balance at March 31, 2023 at Mar. 31, 2023				$ 2,000				$ 277,253,000			$ (271,279,000)			$ 105,000			$ (1,069,000)				$ 5,012,000