Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]
Balance, Value at Dec. 31, 2009	$ 41,426	$ 2,748	$ 147,507	$ (108,758)	$ (71)
Balance, Shares at Dec. 31, 2009		68,713,982			(9,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	1,476			1,476
Issuance of stock under employee stock purchase plan, value	153	35	118
Issuance of stock under employee stock purchase plan, shares		850,000
Share-based compensation, value	571	1	570
Share-based compensation, shares		35,000
Balance, Value at Dec. 31, 2010	43,626	2,784	148,195	(107,282)	(71)
Balance, Shares at Dec. 31, 2010		69,598,982			(9,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(3,524)			(3,524)
Share-based compensation, value	647	3	644
Share-based compensation, shares		80,000
Balance, Value at Dec. 31, 2011	40,749	2,787	148,839	(110,806)	(71)
Balance, Shares at Dec. 31, 2011		69,678,982			(9,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(17,598)			(17,598)
Share-based compensation, value	710	7	703
Share-based compensation, shares		165,800
Balance, Value at Dec. 31, 2012	$ 23,861	$ 2,794	$ 149,542	$ (128,404)	$ (71)
Balance, Shares at Dec. 31, 2012		69,844,782			(9,395)