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Equipment Held for Operating Lease (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) item region | Dec. 31, 2014 USD ($) aircraft item | Dec. 31, 2013 USD ($)
Equipment Held for Lease |  |  |
Number of geographic regions in which aircraft lessees are domiciled in | region | 8 |  |
Lease rent revenue | $ 107,866 | $ 101,748 | $ 101,737
Lease rent revenue less applicable depreciation and interest | 5,658 | 3,809 | 10,679
Net book value of equipment held for operating lease | 1,122,859 | 1,066,448 | 1,033,022
Minimum future payments under non-cancelable leases |  |  |
2016 | 74,133 |  |
2017 | 47,513 |  |
2018 | 35,467 |  |
2019 | 27,434 |  |
2020 | 21,914 |  |
Thereafter | 24,689 |  |
Minimum future payments | 231,150 |  |
United States |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 43,577 | 37,990 | 37,788
Lease rent revenue less applicable depreciation and interest | 634 | 2,577 | 6,055
Net book value of equipment held for operating lease | 103,492 | 61,521 | 103,515
Mexico |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 31,534 | 21,796 | 21,407
Lease rent revenue less applicable depreciation and interest | 2,310 | 2,157 | 1,641
Net book value of equipment held for operating lease | 42,246 | 64,770 | 75,628
Canada |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 9,688 | 9,907 | 8,794
Lease rent revenue less applicable depreciation and interest | (123) | (100) | 747
Net book value of equipment held for operating lease | 18,893 | 11,026 | 12,500
Europe |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 9,177 | 11,880 | 14,258
Lease rent revenue less applicable depreciation and interest | 11,074 | 6,988 | 5,061
Net book value of equipment held for operating lease | 389,721 | 344,833 | 368,381
South America |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 6,906 | 7,771 | 7,387
Lease rent revenue less applicable depreciation and interest | 1,929 | 3,503 | 2,995
Net book value of equipment held for operating lease | 112,718 | 107,080 | 78,486
Asia |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 2,789 | 4,997 | 2,947
Lease rent revenue less applicable depreciation and interest | 8,867 | 5,891 | 5,652
Net book value of equipment held for operating lease | 310,292 | 232,448 | 219,123
Africa |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 2,223 | 4,143 | 6,547
Lease rent revenue less applicable depreciation and interest | 206 | 1,041 | 837
Net book value of equipment held for operating lease | 9,612 | 12,063 | 3,734
Middle East |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue | 1,972 | 3,264 | 2,609
Lease rent revenue less applicable depreciation and interest | 474 | 1,277 | 1,664
Net book value of equipment held for operating lease | 18,937 | 17,125 | 58,509
Off-lease and other |  |  |
Equipment Held for Lease |  |  |
Lease rent revenue less applicable depreciation and interest | (19,713) | (19,525) | (13,973)
Net book value of equipment held for operating lease | $ 116,948 | $ 215,582 | $ 113,146
Equipment held for lease Member | Engines and related equipment |  |  |
Equipment Held for Lease |  |  |
Number of equipments held for lease | item | 201 | 207 |
Cost of equipments held for lease | $ 1,310,700 | $ 1,303,300 |
Equipment held for lease Member | Spare parts packages |  |  |
Equipment Held for Lease |  |  |
Number of equipments held for lease | item | 5 | 5 |
Cost of equipments held for lease | $ 5,200 | $ 6,100 |
Equipment held for lease Member | Aircrafts |  |  |
Equipment Held for Lease |  |  |
Number of equipments held for lease | 10 | 5 |
Cost of equipments held for lease | $ 123,500 | $ 38,100 |
Month-to-month leases |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 90,173 | 97,951 |
Leases expiring 2015 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease |  | 331,757 |
Leases expiring 2016 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 434,658 | 151,444 |
Leases expiring 2017 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 113,879 | 73,387 |
Leases expiring 2018 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 87,916 | 62,972 |
Leases expiring 2019 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 60,022 | 24,001 |
Leases expiring 2020 |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | 88,634 |  |
Leases expiring thereafter |  |  |
Equipment Held for Lease |  |  |
Net book value of equipment held for operating lease | $ 130,629 | $ 109,354 |

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