Leases Finance and Operating Lease Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finance Leases
remainder of 2020	$ 190
2021 (1)	753
2022	725
2023	349
2024	98
2025 and thereafter	0
Total minimum lease payments	2,115
Less amount representing interest	164
Present value of minimum lease payments	1,951
Less current portion	666
Long-term portion	1,285
Operating Leases
Less current portion	130,793	$ 120,662
Long-term portion	1,242,843	$ 1,218,014
Total Operating and Finance Lease Obligations
remainder of 2020	35,424
2021 (1)	236,176
2022	211,233
2023	197,211
2024	174,362
2025 and thereafter	1,220,152
Total minimum lease payments	2,074,558
Less amount representing interest	690,579
Present value of minimum lease payments	1,383,979
Less current portion	131,459
Long-term portion	1,252,520
Other Current Liabilities \| COVID-19 Pandemic
Total Operating and Finance Lease Obligations
2021 (1)	8,400
Aircraft and Spare Engine Leases
Operating Leases
remainder of 2020	34,027
2021 (1)	230,825
2022	206,199
2023	193,554
2024	171,492
2025 and thereafter	1,075,999
Total minimum lease payments	1,912,096
Less amount representing interest	555,428
Present value of minimum lease payments	1,356,668
Less current portion	127,533
Long-term portion	1,229,135
Property Facility Leases
Operating Leases
remainder of 2020	1,124
2021 (1)	4,598
2022	4,309
2023	3,308
2024	2,772
2025 and thereafter	144,153
Total minimum lease payments	160,264
Less amount representing interest	134,986
Present value of minimum lease payments	25,278
Less current portion	3,178
Long-term portion	22,100
Other
Operating Leases
remainder of 2020	83
2021 (1)	0
2022	0
2023	0
2024	0
2025 and thereafter	0
Total minimum lease payments	83
Less amount representing interest	1
Present value of minimum lease payments	82
Less current portion	82
Long-term portion	$ 0

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