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

Fair Value Measurements (Narrative) (Details)

v3.3.1.900
Fair Value Measurements (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
item
Dec. 31, 2013
USD ($)
item
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Impairment charges | $ $ 16,322 $ 21,828 $ 25,616
Number of aircraft impaired 8 8 6
Number of engines impaired 12 3  
Flight Equipment Held For Operating Leases [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Estimated useful life of asset, years 25 years