Shareholders' Equity (Preferred Stock) (Details) (USD $)	0 Months Ended	12 Months Ended
	Oct. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Class of Stock [Line Items]
Reverse stock split, conversion ratio	0.01
Preferred stock, shares outstanding		0
Dividends and deferred interest paid		$ 0	$ 0	$ 644,000
Unpaid cumulative dividends		0	0	2,300,000
Impact of preferred stock activity on the Consolidated Statement of Operations:
Gain on retirement of preferred stock		0	9,375,000	0
Preferred stock gain on retirement, net of accretion, and dividends		0	44,592,000	(3,294,000)
Series A Preferred stock [Member]
Class of Stock [Line Items]
Preferred stock, shares outstanding		0	0
Dividends and deferred interest paid			4,500,000	300,000
Accretion of discount on preferred stock			600,000	700,000
Impact of preferred stock activity on the Consolidated Statement of Operations:
Gain on retirement of preferred stock		0	38,625,000	0
Dividends and accretion on preferred stock		0	(2,652,000)	(3,294,000)
Preferred stock [Member]
Impact of preferred stock activity on the Consolidated Statement of Operations:
Gain on retirement of preferred stock		0	9,375,000	0
Dividends and accretion on preferred stock		0	(756,000)	0
Preferred stock [Member]
Impact of preferred stock activity on the Consolidated Statement of Operations:
Gain on retirement of preferred stock		0	48,000,000	0
Dividends and accretion on preferred stock		$ 0	$ (3,408,000)	$ (3,294,000)