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Lease Obligations Lease Obligations - Additional Details (Phantom) (Details) (USD $)
Dec. 31, 2014
Leases [Abstract]  
Capital Leases, Future Minimum Payments Due in Two Years $ 1,500,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
Capital Leases, Future Minimum Payments Due in Three Years 1,500,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
Capital Leases, Future Minimum Payments, Receivable in Four Years $ 1,500,000us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears