Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Property, Plant and Equipment [Table Text Block]

Contractual Purchase Commitments

As of December 31, 2015, the Company had firm deliveries and options for Boeing 737-700, 737-800, 737 MAX 7, and 737 MAX 8 aircraft as follows:

	The Boeing Company 737 NG				The Boeing Company 737 MAX
	-800 Firm Orders	Options	Additional -700 A/C		-7 Firm Orders	-8 Firm Orders		Options	Total
2016	36	—	17		—	—		—	53
2017	35	—	14		—	14		—	63
2018	18	18	4		—	13		—	53
2019	—	—	—		15	10		—	25
2020	—	—	—		14	22		—	36
2021	—	—	—		1	33		18	52
2022	—	—	—		—	30		19	49
2023	—	—	—		—	24		23	47
2024	—	—	—		—	24		23	47
2025	—	—	—		—	—		36	36
2026	—	—	—		—	—		36	36
2027	—	—	—		—	—		36	36
Total	89	18	35	(b)	30	170	(a)	191	533

(a) The Company has flexibility to substitute MAX 7 in lieu of MAX 8 firm orders beginning in 2019.

(b) To be acquired in leases from various third parties.