Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2011	$ 5,646	$ 15,259	$ (3,069)	$ (390)	$ 17,446
Balance, shares at Dec. 31, 2011	5,646
Exercise of stock options	20	30			50
Exercise of stock options, shares	20				20
Shares issued under the ESPP	20	89			109
Shares issued under the ESPP, shares	20
Shares issued in lieu of cash for services	1	5			6
Shares issued in lieu of cash for services, shares	1
Stock option expense		414			414
Net income (loss)			709		709
Comprehensive income (loss)				(12)	(12)
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
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