Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands		Share-Based Payment Arrangement, Employee [Member] Common Stock [Member]	Share-Based Payment Arrangement, Employee [Member] Additional Paid-in Capital [Member]	Share-Based Payment Arrangement, Employee [Member] Statutory Reserves [Member]	Share-Based Payment Arrangement, Employee [Member] Retained Earnings [Member]	Share-Based Payment Arrangement, Employee [Member] AOCI Attributable to Parent [Member]	Share-Based Payment Arrangement, Employee [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Statutory Reserves [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member]	Common Stock [Member]		Additional Paid-in Capital [Member]		Statutory Reserves [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [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	$ 21,766
Net loss														0		0		0	(717)	0	(717)
Foreign currency translation adjustment														0		0		0	0	(22)	(22)
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	$ 16	$ 0	$ 0	$ 0	$ 16
Foreign currency translation adjustment														$ 0		0		0	0	(22)	(22)
Balance (in shares) at Mar. 31, 2022														7,094,506
Balance at Mar. 31, 2022														$ 7		61,829		2,598	(44,451)	1,060	21,043
Balance (in shares) at Dec. 31, 2021														7,075,506
Balance at Dec. 31, 2021														$ 7		61,813		2,598	(43,734)	1,082	21,766
Net loss																						$ (2,431)
Foreign currency translation adjustment																						(17)
Foreign currency translation adjustment																						(17)
Balance (in shares) at Jun. 30, 2022														7,174,506
Balance at Jun. 30, 2022														$ 7		61,985		2,598	(46,165)	1,065	19,490
Balance (in shares) at Mar. 31, 2022														7,094,506
Balance at Mar. 31, 2022														$ 7		61,829		2,598	(44,451)	1,060	21,043
Net loss														0		0		0	(1,714)	0	(1,714)	(1,714)
Foreign currency translation adjustment														0		0		0	0	5	5	5
Share-based compensation in exchange for services from employees and directors														0		16		0	0	0	16
Foreign currency translation adjustment														$ 0		0		0	0	5	5	5
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	140
Balance (in shares) at Jun. 30, 2022														7,174,506
Balance at Jun. 30, 2022														$ 7		61,985		2,598	(46,165)	1,065	19,490
Balance (in shares) at Dec. 31, 2022	[1]													7,174,506
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2022								$ 0	$ 0	$ 0	$ (191)	$ 0	$ (191)
Balance at Dec. 31, 2022														$ 7	[1]	62,017	[1]	2,598	(53,525)	1,200	12,297
Net loss														0		0		0	(1,143)	0	(1,143)
Foreign currency translation adjustment														0		0		0	0	(81)	(81)
Foreign currency translation adjustment														$ 0		0		0	0	(81)	(81)
Balance (in shares) at Mar. 31, 2023														7,174,506
Balance at Mar. 31, 2023														$ 7		62,017		2,598	(54,859)	1,119	10,882
Balance (in shares) at Dec. 31, 2022	[1]													7,174,506
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2022								$ 0	$ 0	$ 0	$ (191)	$ 0	$ (191)
Balance at Dec. 31, 2022														$ 7	[1]	62,017	[1]	2,598	(53,525)	1,200	12,297
Net loss																						(2,546)
Foreign currency translation adjustment																						202
Foreign currency translation adjustment																						202
Balance (in shares) at Jun. 30, 2023														7,204,506
Balance at Jun. 30, 2023														$ 7		62,042		2,598	(56,262)	1,402	9,787
Balance (in shares) at Mar. 31, 2023														7,174,506
Balance at Mar. 31, 2023														$ 7		62,017		2,598	(54,859)	1,119	10,882
Net loss														0		0		0	(1,403)	0	(1,403)	(1,403)
Foreign currency translation adjustment														$ 0		0		0	0	283	283	283
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		25		0	0	0	25
Foreign currency translation adjustment														$ 0		0		0	0	283	283	$ 283
Balance (in shares) at Jun. 30, 2023														7,204,506
Balance at Jun. 30, 2023														$ 7		$ 62,042		$ 2,598	$ (56,262)	$ 1,402	$ 9,787

[1] Retrospectively restated for effect of the 1-for-5 reverse stock split effective on January 18, 2023, see Note 4(g).