Consolidated Condensed Statements Of Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interest [Member]	Total
Balance at Dec. 31, 2018	$ 8,664	$ 84,999	$ (509)	$ (927)	$ (253)	$ 91,974
Balance, shares at Dec. 31, 2018	8,664
Exercise of stock options, net	$ 27	(9)				18
Exercise of stock options, net, shares	27
Withholding of common stock upon vesting of restricted stock units	$ 20	(255)				(235)
Withholding of common stock upon vesting of restricted stock units, shares	20
Shares issued under the employee stock purchase plan	$ 3	67				70
Shares issued under the employee stock purchase plan, shares	3
Stock-based compensation		329				329
Net (loss) income			775			775
Comprehensive income				130		130
Balance at Mar. 31, 2019	$ 8,714	85,131	266	(797)	(253)	93,061
Balance, shares at Mar. 31, 2019	8,714
Balance at Dec. 31, 2019	$ 8,781	86,770	(4,286)	(520)	(253)	90,492
Balance, shares at Dec. 31, 2019	8,781
Exercise of stock options, net	$ 11	4				$ 15
Exercise of stock options, net, shares	11					48
Withholding of common stock upon vesting of restricted stock units	$ 22	(220)				$ (198)
Withholding of common stock upon vesting of restricted stock units, shares	22
Shares issued under the employee stock purchase plan	$ 5	48				53
Shares issued under the employee stock purchase plan, shares	5
Stock-based compensation		376				376
Net (loss) income			(1,979)			(1,979)
Comprehensive income				18		18
Balance at Mar. 31, 2020	$ 8,819	$ 86,978	$ (6,265)	$ (502)	$ (253)	$ 88,777
Balance, shares at Mar. 31, 2020	8,819