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

Accrued maintenance liability (Details)

v3.8.0.1
Accrued maintenance liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Movement in Accrued Maintenance Liability [Roll Forward]    
Accrued maintenance liability at beginning of period $ 2,750,576 $ 3,185,794
Maintenance payments received 756,314 794,711
Maintenance payments returned (523,403) (505,407)
Release to income upon sale (275,360) (341,161)
Release to income other than upon sale (302,408) (421,332)
Lessor contribution, top ups and other 42,379 8,315
Interest accretion 13,701 26,563
Additions due to aircraft acquisitions 0 3,093
Accrued maintenance liability at end of period $ 2,461,799 $ 2,750,576