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, 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	(3,524)			(3,524)
Exercise of share-based awards, shares	0
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	(17,598)			(17,598)
Exercise of share-based awards, shares	0
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,275)			(11,275)
Exercise of share-based awards, value	71	7	64
Exercise of share-based awards, shares	182,930	182,930
Share-based compensation, value	643	14	629
Share-based compensation, shares		354,832
Balance, Value at Dec. 31, 2013	$ 13,300	$ 2,815	$ 150,235	$ (139,679)	$ (71)
Balance, Shares at Dec. 31, 2013		70,382,544			(9,395)