Long-Term Debt Senior Subordinated Notes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Senior Subordinated Notes [Member]	Mar. 08, 2013 Senior Subordinated Notes [Member]	Dec. 31, 2012 Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, stated interest rate					12.535%
Debt, short-term and long-term					$ 571,500,000		$ 621,500,000
Senior Subordinated Notes, repurchased amount						50,000,000
Redemption Premium, percentage of par value						106.268%
Extinguishment of Debt, Fees Paid to Lenders						3,100,000
Write off of unamortized deferred financing costs					800,000
Extinguishment of Debt, Accrued Interest Paid to Lenders						2,500,000
Net loss on extinguishments of long-term debt	$ 10,300,000	$ 0	$ 14,200,000	$ 9,400,000	$ 3,900,000