Debt 7.875% Senior Secured Notes (Details) (USD $)		0 Months Ended
	Mar. 31, 2012	Feb. 05, 2013 7.875% Senior Notes	Feb. 05, 2013 Asset Based Lending Facility [Member]	Feb. 05, 2013 Maximum [Member] 7.875% Senior Notes	Feb. 05, 2013 February 1, 2016 [Member] 7.875% Senior Notes	Feb. 05, 2013 On or Before February 1, 2016 [Member] 7.875% Senior Notes	Feb. 05, 2013 February 1, 2017 [Member] 7.875% Senior Notes	Feb. 05, 2013 February 1, 2018 [Member] 7.875% Senior Notes	Feb. 05, 2013 February 1, 2019 and Thereafter [Member] 7.875% Senior Notes	Feb. 05, 2013 Redemption option using cash proceeds from equity offerings On or Before February 1, 2016 [Member] 7.875% Senior Notes	Feb. 05, 2013 Redemption option using cash proceeds from equity offerings On or Before February 1, 2016 [Member] Maximum [Member] 7.875% Senior Notes	Feb. 05, 2013 Redemption Option Upon Change of Control [Member] 7.875% Senior Notes
Debt Instrument [Line Items]
Stated interest rate on debt instrument	4.25%
Face amount of senior notes		$ 425,000,000
Debt discount rate		99.274%
Effective interest rate		8.00%
Percentage of Stocks of Domestic Subsidiaries, Subject to Exception and Lien		100.00%	100.00%	20.00%
Percentage of Stocks of Foreign Subsidiaries, Subject to Exception and Lien			65.00%	65.00%
Redemption amount, percentage of principal amount											35.00%
Redemption price percentage					105.906%	103.00%	103.938%	101.969%	100.00%	107.875%		101.00%
Maximum redemption per period				42,500,000
Percentage of original aggregate principal amount, minimum after each redemption		65.00%
Debt Instrument, Event of Default, Acceleration of Other Debt Agreements		30,000,000
Debt Instrument, Event of Default, Non-appealable Judgments, In Excess Amount		$ 30,000,000