Condensed Consolidated Statements of Equity (Unaudited) - USD ($)	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] At The Market Offering Agreement [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	At The Market Offering Agreement [Member]	Total
Balance (in shares) at Dec. 31, 2020		8,934,952
Balance at Dec. 31, 2020		$ 9,000			$ 259,058,000		$ (253,283,000)	$ 16,000	$ 70,000			$ 5,870,000
Stock-based compensation expense					258,000							258,000
Issuance of common stock via at-the-market offering, net (in shares)	2,976,832
Issuance of common stock via at-the-market offering, net	$ 3,000			$ 6,829,000							$ 6,832,000
Foreign currency translation gain								1,000				1,000
Net loss							(2,413,000)		(118,000)			(2,531,000)
Balance (in shares) at Mar. 31, 2021		11,911,784
Balance at Mar. 31, 2021		$ 12,000			266,145,000		(255,696,000)	17,000	(48,000)			10,430,000
Balance (in shares) at Dec. 31, 2020		8,934,952
Balance at Dec. 31, 2020		$ 9,000			259,058,000		(253,283,000)	16,000	70,000			5,870,000
Foreign currency translation gain												12,000
Balance (in shares) at Sep. 30, 2021		11,911,784
Balance at Sep. 30, 2021		$ 12,000			268,336,000		(262,009,000)	28,000	(199,000)			6,168,000
Balance (in shares) at Mar. 31, 2021		11,911,784
Balance at Mar. 31, 2021		$ 12,000			266,145,000		(255,696,000)	17,000	(48,000)			10,430,000
Stock-based compensation expense					2,099,000							2,099,000
Foreign currency translation gain								12,000				12,000
Net loss							(4,539,000)		(133,000)			(4,672,000)
Balance (in shares) at Jun. 30, 2021		11,911,784
Balance at Jun. 30, 2021		$ 12,000			268,244,000		(260,235,000)	29,000	(181,000)			7,869,000
Stock-based compensation expense					92,000							92,000
Foreign currency translation gain								(1,000)				(1,000)
Net loss							(1,774,000)		(18,000)			(1,792,000)
Balance (in shares) at Sep. 30, 2021		11,911,784
Balance at Sep. 30, 2021		$ 12,000			268,336,000		(262,009,000)	28,000	(199,000)			6,168,000
Balance (in shares) at Dec. 31, 2021		11,911,784
Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021			$ (10,681,000)			$ 9,739,000				$ (942,000)
Balance at Dec. 31, 2021		$ 12,000			268,447,000		(264,662,000)	31,000	(431,000)			3,397,000
Stock-based compensation expense					42,000							42,000
Issuance of common stock via at-the-market offering, net (in shares)	918,093
Issuance of common stock via at-the-market offering, net	$ 1,000			593,000							$ 594,000
Related party convertible note price reset					213,000							213,000
Foreign currency translation gain								14,000				14,000
Net loss							(1,910,000)		(126,000)			(2,036,000)
Balance (in shares) at Mar. 31, 2022		12,829,877
Balance at Mar. 31, 2022		$ 13,000			258,614,000		(256,833,000)	45,000	(557,000)			1,282,000
Balance (in shares) at Dec. 31, 2021		11,911,784
Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021			$ (10,681,000)			$ 9,739,000				$ (942,000)
Balance at Dec. 31, 2021		$ 12,000			268,447,000		(264,662,000)	31,000	(431,000)			3,397,000
Issuance of common stock via at-the-market offering, net (in shares)											8,857,344
Related party convertible note price reset												3,763,000
Foreign currency translation gain												67,000
Balance (in shares) at Sep. 30, 2022		31,321,362
Balance at Sep. 30, 2022		$ 31,000			267,731,000		(262,761,000)	98,000	(833,000)			4,266,000
Balance (in shares) at Mar. 31, 2022		12,829,877
Balance at Mar. 31, 2022		$ 13,000			258,614,000		(256,833,000)	45,000	(557,000)			1,282,000
Stock-based compensation expense					72,000							72,000
Issuance of common stock via at-the-market offering, net (in shares)	4,397,329										1,450,000
Issuance of common stock via at-the-market offering, net	$ 4,000			1,446,000
Related party convertible note price reset					2,475,000							2,475,000
Foreign currency translation gain								31,000				31,000
Net loss							(2,688,000)		(113,000)			(2,801,000)
Conversion of related party note payable to common stock (in shares)		10,552,234
Conversion of related party note payable to common stock		$ 11,000			2,989,000							3,000,000
Balance (in shares) at Jun. 30, 2022		27,779,440
Balance at Jun. 30, 2022		$ 28,000			265,596,000		(259,521,000)	76,000	(670,000)			5,509,000
Stock-based compensation expense					70,000							70,000
Issuance of common stock via at-the-market offering, net (in shares)	3,541,922
Issuance of common stock via at-the-market offering, net	$ 3,000			$ 990,000							$ 993,000
Related party convertible note price reset					1,075,000							1,075,000
Foreign currency translation gain								22,000				22,000
Net loss							(3,240,000)		(163,000)			(3,403,000)
Balance (in shares) at Sep. 30, 2022		31,321,362
Balance at Sep. 30, 2022		$ 31,000			$ 267,731,000		$ (262,761,000)	$ 98,000	$ (833,000)			$ 4,266,000