Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member]	Statutory Reserves [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Statutory Reserves [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Balance (in shares) at Dec. 31, 2021		7,075,506
Balance at Dec. 31, 2021		$ 7		$ 61,813		$ 2,598		$ (43,734)		$ 1,082		$ 0		$ 21,766
Share-based compensation in exchange for services from employees and directors (in shares)		19,000
Share-based compensation in exchange for services from employees and directors		$ 0		64		0		0		0		0		64
Share-based compensation in exchange for services from nonemployees (in shares)		80,000
Share-based compensation in exchange for services from nonemployees		$ 0		140		0		0		0		0		140
Net loss		0		0		0		(9,791)		0		0		(9,791)
Foreign currency translation adjustment		$ 0		0		0		0		118		0		118
Balance (in shares) at Dec. 31, 2022		7,174,506
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2022	$ 0		$ 0		$ 0		$ (191)		$ 0		$ 0		$ (191)
Balance at Dec. 31, 2022		$ 7		62,017		2,598		(53,525)		1,200		0		12,297
Share-based compensation in exchange for services from employees and directors (in shares)		30,000
Share-based compensation in exchange for services from employees and directors		$ 0		50		0		0		0		0		50
Net loss		0		0		0		(5,974)		0		0		(5,974)
Foreign currency translation adjustment		$ 0		0		0		0		72		0		72
Balance (in shares) at Dec. 31, 2023		7,204,506
Balance at Dec. 31, 2023		$ 7		$ 62,067		$ 2,598		$ (59,690)		$ 1,272		$ 0		$ 6,254