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Debt (Schedule of Aggregate Maturities of Long-Term Debt) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Long-term Debt, Unclassified [Abstract]  
2015 $ 400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2016 400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2017 400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2018 400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2019 400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Thereafter $ 211,600us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive