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v3.20.4

Lease (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) Aircraft | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Leases [Abstract] |  |  |
Operating Leases, Rent Expense | $ 24,600 | $ 15,000 | $ 12,700
Capital Leased Assets, Number of Units | Aircraft | 6 |  |
operating right of use asset, net | $ 115,911 | 22,081 |
Finance Lease, Right-of-Use Asset | 133,175 | 111,665 |
Total Right-of-Use Asset | 249,086 | 133,746 |
Current operating lease liabilities | 14,313 | 2,662 |
Finance Lease, Liability, Current | 9,767 | 7,666 |
Noncurrent operating lease liabilities | 102,289 | 21,290 |
Finance Lease, Liability, Noncurrent | 117,060 | 107,930 |
Total Lease Liability | $ 243,429 | $ 139,548 |
Operating Lease, Weighted Average Discount Rate, Percent | 5.40% | 4.30% |
Finance Lease, Weighted Average Discount Rate, Percent | 5.00% | 4.40% |
Operating Lease, Weighted Average Remaining Lease Term | 8 years 3 months 18 days | 9 years 1 month 6 days |
Finance Lease, Weighted Average Remaining Lease Term | 7 years 7 months 6 days | 9 years 10 months 24 days |
Number of Aircraft In Sale-Leaseback Transactions | Aircraft | 8 |  |
Proceeds from sale-leaseback transactions | $ 87,580 | $ 0 | $ 0
Sale and Leaseback Transaction, Gain (Loss), Net | $ 53,200 |  |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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