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v3.20.2

Leases, Commitments and Contingencies (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) aircraft | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Jan. 01, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Number of aircraft leased | aircraft |  |  | 107 |  |  |
Retained earnings | $ 2,098,456 |  | $ 2,098,456 |  | $ 2,079,179 |
Operating lease right-of-use assets | 296,439 |  | 296,439 |  | 336,009 |
Current maturities of lease liabilities | 83,291 |  | 83,291 |  | 94,806 |
Noncurrent operating leases | $ 221,839 |  | 221,839 |  | $ 259,237 |
Operating leases |  |  | $ 68,000 |  |  |
Weighted-average remaining lease term for operating leases | 6 years 7 months 6 days |  | 6 years 7 months 6 days |  |  |
Weighted-average discount rate for operating leases | 6.10% |  | 6.10% |  |  |
Lease costs |  |  |  |  |  |
Operating lease cost | $ 23,538 | $ 25,173 | $ 72,696 | $ 80,041 |  |
Variable and short-term lease cost | 950 | 1,343 | 3,501 | 4,164 |  |
Sublease income | (1,587) | (357) | (4,718) | (357) |  |
Total lease cost | $ 22,901 | $ 26,159 | $ 71,479 | $ 83,848 |  |
Aircraft |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Retained earnings |  |  |  |  |  | $ 13,100
Aircraft | Minimum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Remaining lease term | 1 year |  | 1 year |  |  |
Aircraft | Maximum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Remaining lease term | 10 years |  | 10 years |  |  |
Aircraft | CRJ 200 |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Impairment charges |  |  | $ 0 |  |  |
Airport Facilities | Minimum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Remaining lease term | 1 month |  | 1 month |  |  |
Airport Facilities | Maximum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Remaining lease term | 36 years |  | 36 years |  |  |

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