Commitments and Contingencies Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Long-term Purchase Commitment [Table Text Block]

Commitments, including $125,866 of remaining progress payments, contractual price escalations and other adjustments for these aircraft, at June 30, 2018, net of amounts already paid, are as follows:

Year Ending December 31,	Amount
Remainder of 2018	$	830,882
2019	382,620
2020	390,416
2021	272,990
2022	—
Thereafter	—
Total	$	1,876,908