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v3.19.3.a.u2

Leases - Leases (Details) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2019 USD ($) | Sep. 30, 2019 USD ($) aircraft | Mar. 31, 2019 USD ($) aircraft | Dec. 31, 2019 USD ($) item | Dec. 31, 2018 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |
Number of aircraft leased | item |  |  |  | 94 |
Operating lease right-of-use assets |  |  |  | $ 336,009 |
Current maturities of lease liabilities |  |  |  | 94,806 |
Noncurrent operating leases |  |  |  | 259,237 |
Operating leases |  |  |  | $ 75,400 |
Weighted-average remaining lease term: Operating leases |  |  |  | 6 years 10 months 2 days |
Weighted-average discount rate: Operating leases |  |  |  | 6.40% |
Lease costs |  |  |  |  |
Operating lease cost |  |  |  | $ 104,011 | $ 185,337
Variable and short-term lease cost |  |  |  | 5,232 | 5,143
Sublease income |  |  |  | (1,436) |
Total lease cost |  |  |  | $ 107,807 | $ 190,480
Aircraft |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Number of aircraft acquired | aircraft |  | 4 | 52 |  |
Payments for acquired aircraft |  | $ 30,000 | $ 111,700 |  |
Impairment adjustment on retained earnings | $ 13,100 |  |  |  |
Aircraft | Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Remaining lease term |  |  |  | 1 year |
Aircraft | Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Remaining lease term |  |  |  | 10 years |
Airport Facilities | Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Remaining lease term |  |  |  | 1 month |
Airport Facilities | Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Remaining lease term |  |  |  | 37 years |

X
- Definition Remaining term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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