Leases Finance and Operating Lease Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finance Leases
remainder of 2020	$ 481
2021	606
2022	578
2023	202
2024	0
2025 and thereafter	0
Total minimum lease payments	1,867
Less amount representing interest	171
Present value of minimum lease payments	1,696
Less current portion	545
Long-term portion	1,151
Operating Leases
Less current portion	125,713	$ 120,662
Long-term portion	1,268,110	$ 1,218,014
Total Operating and Finance Lease Obligations
remainder of 2020	154,741
2021	205,840
2022	206,599
2023	192,577
2024	169,774
2025 and thereafter	1,163,626
Total minimum lease payments	2,093,157
Less amount representing interest	697,638
Present value of minimum lease payments	1,395,519
Less current portion	126,258
Long-term portion	1,269,261
Aircraft and Spare Engine Leases
Operating Leases
remainder of 2020	150,511
2021	200,682
2022	201,759
2023	189,115
2024	167,052
2025 and thereafter	1,019,499
Total minimum lease payments	1,928,618
Less amount representing interest	561,743
Present value of minimum lease payments	1,366,875
Less current portion	122,332
Long-term portion	1,244,543
Property Facility Leases
Operating Leases
remainder of 2020	3,377
2021	4,552
2022	4,262
2023	3,260
2024	2,722
2025 and thereafter	144,127
Total minimum lease payments	162,300
Less amount representing interest	135,717
Present value of minimum lease payments	26,583
Less current portion	3,016
Long-term portion	23,567
Other
Operating Leases
remainder of 2020	372
2021	0
2022	0
2023	0
2024	0
2025 and thereafter	0
Total minimum lease payments	372
Less amount representing interest	7
Present value of minimum lease payments	365
Less current portion	365
Long-term portion	$ 0