Statement of Shareholder's Equity Statement (USD $) In Thousands, except Share data	Total	Preferred Shares [Member]	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Shares [Member]
Stockholders' Equity, Beginning Balance at Dec. 31, 2010	$ 303,491	$ 96,325	$ 221	$ 140,418	$ 137,578	$ (71,051)
Shares Outstanding, Beginning Balance at Dec. 31, 2010		4,000	18,524,335
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(26,183)				(26,183)
Income tax benefit from stock options and deferred compensation distributions	158			158
Stock options exercised, shares			181,629
Stock options exercised	1,433			(2,174)		3,607
Share-based compensation expense	1,042			1,042
Deferral of executive and director compensation	87			87
Executive and director deferred compensation distributions, shares			6,319
Executive and director deferred compensation distributions				(126)		126
Stockholders' Equity, Ending Balance at Jun. 30, 2011	$ 280,028	$ 96,325	$ 221	$ 139,405	$ 111,395	$ (67,318)
Shares Outstanding, Ending Balance at Jun. 30, 2011		4,000	18,712,283