Current Developments (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Mar. 01, 2024 USD ($)	Mar. 31, 2024 USD ($) pilot $ / shares shares	Feb. 29, 2024 $ / shares	Jan. 31, 2024 $ / shares	Dec. 31, 2023 $ / shares	Nov. 30, 2023 $ / shares	Oct. 31, 2023 $ / shares	Sep. 30, 2023 $ / shares	Aug. 31, 2023 $ / shares	Jul. 31, 2023 $ / shares	Jun. 30, 2023 $ / shares	May 31, 2023 $ / shares	Apr. 30, 2023 $ / shares	Mar. 31, 2023 $ / shares	Feb. 28, 2023 $ / shares	Jan. 31, 2023 $ / shares	Oct. 26, 2022 $ / shares	Apr. 30, 2021 USD ($) shares	May 12, 2020 USD ($)
Business Acquisition [Line Items]
Number of pilots furloughed | pilot		260
PW1100 GTF Engine
Business Acquisition [Line Items]
Vendor consideration credit, expense offset, total amount to be received		$ 30,600
Vendor consideration credit, recognized		17,800
Vendor consideration credit, expense offset, asset basis reduction		16,200
Aircraft Maintenance, Materials, and Repairs | PW1100 GTF Engine
Business Acquisition [Line Items]
Vendor consideration credit, expense offset		$ 1,600
PSP 1
Business Acquisition [Line Items]
Strike price (in dollars per share) | $ / shares		$ 11.393
Number of warrants (in shares) | shares		643,625.2
PSP 2
Business Acquisition [Line Items]
Strike price (in dollars per share) | $ / shares		$ 19.761
Number of warrants (in shares) | shares		170,230.67
PSP 3
Business Acquisition [Line Items]
Strike price (in dollars per share) | $ / shares		$ 29.496
Number of warrants (in shares) | shares		99,526.95
Convertible notes due 2025 | Convertible Notes
Business Acquisition [Line Items]
Shares conversion rate per portion of principal amount (in shares) | shares		97.5929
Principal amount portion for trading price threshold		$ 1																	$ 1
1.00% convertible notes due 2026 | Convertible Notes
Business Acquisition [Line Items]
Shares conversion rate per portion of principal amount (in shares) | shares		25.3578																20.3791
Principal amount portion for trading price threshold		$ 1																$ 1
JetBlue Merger Agreement
Business Acquisition [Line Items]
Approval prepayment amount price per share (in dollars per share) | $ / shares																	$ 2.50
Additional approval prepayment per share amount paid (in dollars per share) | $ / shares		$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10
Proceeds received from merger termination	$ 69,000
JetBlue Merger Agreement | Accounts Receivable
Business Acquisition [Line Items]
Proceeds received from merger termination	2,300
JetBlue Merger Agreement | Other Operating Income (Expense)
Business Acquisition [Line Items]
Proceeds received from merger termination	$ 66,700