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Net Investment In Direct Finance Leases (Gross Finance Lease Receivables By Categories Of Customers) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Gross finance lease receivables $ 116,420us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived [1] $ 116,992us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived [1]
Tier 1 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Gross finance lease receivables 85,583us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_RiskLevelLowMember		 89,960us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_RiskLevelLowMember
Tier 2 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Gross finance lease receivables $ 30,837us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_RiskLevelMediumMember		 $ 27,032us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_RiskLevelMediumMember
[1] At the inception of the lease, the Company records the total minimum lease payments, executory costs, if any, and unguaranteed residual value as gross finance lease receivables. The gross finance lease receivables are reduced as customer payments are received.  There was no unguaranteed residual value at March 31, 2015 and December 31, 2014 included in gross finance lease receivables. There were no executory costs included in gross finance lease receivables as of March 31, 2015 and December 31, 2014.