Long-Term Debt - Schedule of Redemption Price (Details) - Senior Notes [Member] - Senior Notes 6.875 Percent due 2025 [Member]	6 Months Ended
	Jun. 30, 2015
2020 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price (percentage)	103.438%
2021 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price (percentage)	102.292%
2022 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price (percentage)	101.146%
2023 and thereafter [Member]
Debt Instrument, Redemption [Line Items]
Redemption price (percentage)	100.00%