Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2008	$ 48,959	$ 2	$ 0	$ 153,225	$ (22)	$ (104,246)
Balance, Shares at Dec. 31, 2008		18,944,000	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	606			606
Exercise of stock options, shares		80,000
Exercise of stock options, value	36			36
Repurchases of common stock, shares			547,000
Repurchases of common stock	(991)		(991)
Net income (loss)	608					608
Unrealized gain on securities available-for-sale	171				171
Total comprehensive income (loss)	779
Balance at Dec. 31, 2009	49,389	2	(991)	153,867	149	(103,638)
Balance, Shares at Dec. 31, 2009		19,024,000	547,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	874			874
Exercise of stock options, shares		147,000
Exercise of stock options, value	44			44
Repurchases of common stock, shares			26,000
Repurchases of common stock	(48)		(48)
Net income (loss)	(6,214)					(6,214)
Unrealized gain on securities available-for-sale	(86)				(86)
Total comprehensive income (loss)	(6,300)
Balance at Dec. 31, 2010	43,959	2	(1,039)	154,785	63	(109,852)
Balance, Shares at Dec. 31, 2010	18,597,311	19,171,000	573,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	800			800
Exercise of stock options, shares		313,000
Exercise of stock options, value	119			119
Repurchases of common stock, shares			10,000
Repurchases of common stock	(19)		(19)
Net income (loss)	(3,342)					(3,342)
Unrealized gain on securities available-for-sale	(30)				(30)
Total comprehensive income (loss)	(3,372)
Balance at Dec. 31, 2011	$ 41,487	$ 2	$ (1,058)	$ 155,704	$ 33	$ (113,194)
Balance, Shares at Dec. 31, 2011	18,901,160	19,484,000	583,000