Consolidated 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, 2016	$ 6,820	$ 21,383	$ (8,114)	$ (1,014)	$ 455	$ 19,530
Balance, shares at Dec. 31, 2016	6,820
Exercise of stock options, net	$ 69	131				$ 200
Exercise of stock options, net, shares	69					220
Shares issued under the employee stock purchase plan	$ 11	103				$ 114
Shares issued under the employee stock purchase plan, shares	11
Stock-based compensation		844				844
Net income			2,058		(938)	1,120
Amounts impacting other comprehensive loss				281		281
Acquisition of non-controlling interest					(650)	(650)
Allocation of non-controlling interest at acquisition		(880)			880
Balance at Dec. 31, 2017	$ 6,900	21,581	(6,056)	(733)	(253)	21,439
Balance, shares at Dec. 31, 2017	6,900
Exercise of stock options, net	$ 532	(23)				$ 509
Exercise of stock options, net, shares	532					600
Shares issued under the employee stock purchase plan	$ 7	211				$ 218
Shares issued under the employee stock purchase plan, shares	7
Stock-based compensation		1,395				1,395
Issuance of common stock	$ 1,725	87,242				88,967
Issuance of common stock, shares	1,725
Repurchase of common stock	$ (500)	(25,407)				(25,907)
Repurchase of common stock, shares	(500)
Net income			5,547			5,547
Amounts impacting other comprehensive loss				(194)		(194)
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	$ 69	29				$ 98
Exercise of stock options, net, shares	69					129
Withholding of common stock upon vesting of restricted stock units	$ 36	(340)				$ (304)
Withholding of common stock upon vesting of restricted stock units, shares	36
Shares issued under the employee stock purchase plan	$ 9	199				208
Shares issued under the employee stock purchase plan, shares	9
Stock-based compensation	$ 3	1,883				1,886
Stock-based compensation, shares	3
Net income			(3,777)			(3,777)
Amounts impacting other comprehensive loss				407		407
Balance at Dec. 31, 2019	$ 8,781	$ 86,770	$ (4,286)	$ (520)	$ (253)	$ 90,492
Balance, shares at Dec. 31, 2019	8,781