Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Net Investment In Finance And Sales-type Leases (Components Of The Net Investment In Finance And Sales-type Leases) (Details)

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Net Investment In Finance And Sales-type Leases (Components Of The Net Investment In Finance And Sales-type Leases) (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
agreement
Dec. 31, 2015
USD ($)
Net Investment In Finance And Sales-type Leases [Abstract]    
Future minimum lease payments to be received $ 708,934,000 $ 533,879,000
Estimated residual values of leased flight equipment (unguaranteed) 321,739,000 164,123,000
Less: Unearned income (274,791,000) (228,804,000)
Net investment in finance and sales-type leases, before allowance for credit losses 755,882,000 469,198,000
Less: Allowance for credit losses 0 0
Net investment in finance and sales-type leases $ 755,882,000 $ 469,198,000
Number of finance leases, written off for credit losses | agreement 4  
Provision for credit losses on finance leases $ 11,100,000