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Leases - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) aircraft | Dec. 31, 2022 USD ($) aircraft
Lessee, Lease, Description [Line Items] |  |
Number of aircrafts operated | 42 | 30
Additional variable costs | $ | $ 12,689 | $ 13,778
Number of aircrafts purchased | 2 |
Number of aircrafts in sale-leaseback transaction | 10 |
Gain on sale-leaseback transactions | $ | $ 10,223 |
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Lease term | 2 years |
Minimum | Charter Flight Services |  |
Lessee, Lease, Description [Line Items] |  |
Lease term | 2 years |
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Lease term | 30 years |
Maximum | Charter Flight Services |  |
Lessee, Lease, Description [Line Items] |  |
Lease term | 6 years |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's 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/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479741/842-40-50-2 + Details
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