Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	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)	19,629,403
Balance (in shares) at Dec. 31, 2019	19,629,403
Balance at Dec. 31, 2019	$ 20	$ 43,111	$ 2,607	$ (35,773)	$ 1,505	$ (57)	$ 11,413
Share-based compensation in exchange for services from employees and directors (in shares)	1,632,523
Share-based compensation in exchange for services from employees and directors	$ 2	1,897	0	0	0	0	1,899
Net income (loss) for the period	0	0	0	(2,310)	0	0	(2,310)
Foreign currency translation adjustment	$ 0	0	0	0	71	1	72
Share-based compensation in exchange for services from nonemployees (in shares)	430,000
Share-based compensation in exchange for services from nonemployees	$ 0	477	0	0	0	0	477
Balance (in shares) at Mar. 31, 2020	21,691,926
Balance at Mar. 31, 2020	$ 22	45,485	2,607	(38,083)	1,576	(56)	11,551
Balance (in shares) at Dec. 31, 2019	19,629,403
Balance at Dec. 31, 2019	$ 20	43,111	2,607	(35,773)	1,505	(57)	11,413
Net income (loss) for the period							(3,280)
Foreign currency translation adjustment							68
Balance (in shares) at Jun. 30, 2020	21,691,926
Balance at Jun. 30, 2020	$ 22	45,493	2,607	(39,051)	1,572	(58)	10,585
Balance (in shares)	21,691,926
Balance (in shares) at Mar. 31, 2020	21,691,926
Balance at Mar. 31, 2020	$ 22	45,485	2,607	(38,083)	1,576	(56)	11,551
Share-based compensation in exchange for services from employees and directors	0	8	0	0	0	0	8
Net income (loss) for the period	0	0	0	(968)	0	(2)	(970)
Foreign currency translation adjustment	$ 0	0	0	0	(4)	0	(4)
Balance (in shares) at Jun. 30, 2020	21,691,926
Balance at Jun. 30, 2020	$ 22	45,493	2,607	(39,051)	1,572	(58)	10,585
Balance (in shares)	21,691,926
Balance (in shares)	26,062,915
Balance (in shares) at Dec. 31, 2020	26,062,915
Balance at Dec. 31, 2020	$ 26	49,772	2,598	(40,980)	1,129	(66)	12,479
Issuance of common stock for private placement, net of $10.48 million proceeds allocated to investor warrants labilities and $3.05 million direct offering costs (including $1.45 million proceeds allocated to placement agent warrants liabilities), respectively (in shares)	5,212,000
Issuance of common stock for private placement, net of $10.48 million proceeds allocated to investor warrants labilities and $3.05 million direct offering costs (including $1.45 million proceeds allocated to placement agent warrants liabilities), respectively	$ 5	5,185	0	0	0	0	5,190
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	23	0	0	0	0	23
Net income (loss) for the period	0	0	0	685	0	2	687
Foreign currency translation adjustment	$ 0	0	0	0	(19)	0	(19)
Balance (in shares) at Mar. 31, 2021	31,304,915
Balance at Mar. 31, 2021	$ 31	54,980	2,598	(40,295)	1,110	(64)	18,360
Balance (in shares) at Dec. 31, 2020	26,062,915
Balance at Dec. 31, 2020	$ 26	49,772	2,598	(40,980)	1,129	(66)	12,479
Net income (loss) for the period							(2,959)
Foreign currency translation adjustment							(23)
Balance (in shares) at Jun. 30, 2021	35,290,650
Balance at Jun. 30, 2021	$ 35	61,656	2,598	(43,941)	1,107	(65)	21,390
Balance (in shares)	31,304,915
Balance (in shares) at Mar. 31, 2021	31,304,915
Balance at Mar. 31, 2021	$ 31	54,980	2,598	(40,295)	1,110	(64)	18,360
Share-based compensation in exchange for services from employees and directors (in shares)	3,985,735
Share-based compensation in exchange for services from employees and directors	$ 4	6,676	0	0	0	0	6,680
Net income (loss) for the period	0	0	0	(3,646)	0	0	(3,646)
Foreign currency translation adjustment	$ 0	0	0	0	(3)	(1)	(4)
Balance (in shares) at Jun. 30, 2021	35,290,650
Balance at Jun. 30, 2021	$ 35	$ 61,656	$ 2,598	$ (43,941)	$ 1,107	$ (65)	$ 21,390
Balance (in shares)	35,290,650