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Long-Term Debt - Narrative (Details) $ in Thousands	1 Months Ended			6 Months Ended
Long-Term Debt - Narrative (Details) $ in Thousands	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($) Aircraft	Feb. 28, 2023 USD ($) Aircraft	Jun. 30, 2023 USD ($)	Feb. 01, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 92,700
Other noncurrent liabilities	$ 3,455,985			$ 3,455,985		$ 3,290,599
Consolidated Variable Interest Entity \| Airbus A320 Aircraft Series
Debt Instrument [Line Items]
Number Of Aircrafts Included As Collateral \| Aircraft		6	1
Variable Interest Entity, Primary Beneficiary \| Consolidated Variable Interest Entity
Debt Instrument [Line Items]
Other noncurrent liabilities			$ 27,000
Debt instrument, interest rate, stated percentage			292.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from Lines of Credit				$ 88,500
Repayments of Lines of Credit	$ 61,000
Revolving Credit Facility \| Credit Agricole Corporate and Investment Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 100,000