Consolidated Statements Of Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2012	$ 5,687	$ 15,797	$ (2,360)	$ (402)		$ 18,722
Balance, shares at Dec. 31, 2012	5,687
Exercise of stock options	$ 14	28				$ 42
Exercise of stock options, shares	14					14
Shares issued under the ESPP	$ 26	77				$ 103
Shares issued under the ESPP, shares	26
Stock option expense		532				532
Net income (loss)			(6,162)			(6,162)
Comprehensive income (loss)				71		71
Balance at Dec. 31, 2013	$ 5,727	16,434	(8,522)	(331)		13,308
Balance, shares at Dec. 31, 2013	5,727
Exercise of stock options	$ 100	(43)				$ 57
Exercise of stock options, shares	100					205
Shares issued under the ESPP	$ 16	84				$ 100
Shares issued under the ESPP, shares	16
Shares issued in lieu of cash for services	$ 1	7				8
Shares issued in lieu of cash for services, shares	1
Stock option expense		457				457
Net income (loss)			2,248			2,248
Comprehensive income (loss)				(71)		(71)
Balance at Dec. 31, 2014	$ 5,844	16,939	(6,274)	(402)		16,107
Balance, shares at Dec. 31, 2014	5,844
Exercise of stock options	$ 123	112				$ 235
Exercise of stock options, shares	123					159
Shares issued under the ESPP	$ 14	91				$ 105
Shares issued under the ESPP, shares	14
Stock option expense		579				579
Net income (loss)			2,228		$ (111)	2,117
Investment by non-controlling interest					73	73
Comprehensive income (loss)				(319)		(319)
Balance at Dec. 31, 2015	$ 5,981	$ 17,721	$ (4,046)	$ (721)	$ (38)	$ 18,897
Balance, shares at Dec. 31, 2015	5,981