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Debt - Schedule of Maturities of Long Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
2015	$ 160,860us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2016	313,501us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2017	9,751us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2018	10,199us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2019	181,037us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Thereafter	362,982us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Total debt	$ 1,038,330us-gaap_LongTermDebt	$ 1,091,861us-gaap_LongTermDebt

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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-Name Regulation S-X (SX)

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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