Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Restricted Stock Units (RSUs) [Member] Preferred Stock [Member]	Restricted Stock Units (RSUs) [Member] Common Stock [Member]	Restricted Stock Units (RSUs) [Member] AOCI Attributable to Parent [Member]	Restricted Stock Units (RSUs) [Member] Retained Earnings, Appropriated [Member]	Restricted Stock Units (RSUs) [Member]	Preferred Stock [Member]	Common Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings, Appropriated [Member]	Total
Balance (in shares) at Dec. 31, 2020						0	13,235,038
Balance at Dec. 31, 2020						$ 0	$ 139,726	$ (992)	$ (130,006)	$ 8,728
Exercise of stock options (in shares)						0	135,303
Exercise of stock options						$ 0	$ 53	0	0	53
Issuance of common stock upon settlement of restricted stock units (RSUs) (in shares)						0	108,879
Stock-based compensation						$ 0	$ 378	0	0	378
Net (loss) income						0	$ 0	0	(567)	(567)
Foreign currency translation, net of tax						$ 0		(43)	0	(66)
Sale of common stock (in shares)						0	108,879
Sale of common stock						$ 0	$ 360	0	0	360
Foreign currency translation adjustment, net of tax							$ (23)			(66)
Balance (in shares) at Jun. 30, 2021						0	13,479,220
Balance at Jun. 30, 2021						$ 0	$ 140,494	(1,035)	(130,573)	8,886
Balance (in shares) at Mar. 31, 2021						0	13,298,150
Balance at Mar. 31, 2021						$ 0	$ 139,907	(1,001)	(130,866)	8,040
Exercise of stock options (in shares)						0	72,191
Exercise of stock options						$ 0	$ 17	0	0	17
Issuance of common stock upon settlement of restricted stock units (RSUs) (in shares)						0	108,879
Stock-based compensation	$ 0	$ 210	$ 0	$ 0	$ 210
Net (loss) income						$ 0	$ 0	0	293	293
Foreign currency translation, net of tax						$ 0	$ 0	(34)	0	(34)
Sale of common stock (in shares)						0	108,879
Sale of common stock						$ 0	$ 360	0	0	360
Balance (in shares) at Jun. 30, 2021						0	13,479,220
Balance at Jun. 30, 2021						$ 0	$ 140,494	(1,035)	(130,573)	8,886
Balance (in shares) at Dec. 31, 2021						0	20,374,406
Balance at Dec. 31, 2021						$ 0	$ 172,397	(1,024)	(132,248)	$ 39,125
Exercise of stock options (in shares)						0	59,375			59,375
Exercise of stock options						$ 0	$ 70	0	0	$ 70
Stock-based compensation						0	115	0	0	115
Net (loss) income						0	0	0	(1,513)	(1,513)
Foreign currency translation, net of tax						$ 0	$ 0	(48)	0	(48)
Issuance of common stock upon settlement of RSUs (in shares)						0	34,614
Issuance of common stock upon settlement of RSUs						$ 0	$ 0	0	0	0
Cash settlement of performance stock units						$ 0	$ (137)	0	0	(137)
Balance (in shares) at Jun. 30, 2022						0	20,468,395
Balance at Jun. 30, 2022						$ 0	$ 172,445	(1,072)	(133,761)	37,612
Balance (in shares) at Mar. 31, 2022						0	20,445,880
Balance at Mar. 31, 2022						$ 0	$ 172,400	(1,021)	(133,136)	38,243
Exercise of stock options (in shares)						0	5,208
Exercise of stock options						$ 0	$ 5	0	0	5
Issuance of common stock upon settlement of restricted stock units (RSUs) (in shares)	0	17,307
Stock-based compensation						0	40	0	0	40
Net (loss) income						0	0	0	(625)	(625)
Foreign currency translation, net of tax						$ 0	$ 0	(51)	0	(51)
Sale of common stock (in shares)	0	17,307
Balance (in shares) at Jun. 30, 2022						0	20,468,395
Balance at Jun. 30, 2022						$ 0	$ 172,445	$ (1,072)	$ (133,761)	$ 37,612