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Special Charges - Narrative (Details) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 29, 2023 Aircraft | Sep. 28, 2022 USD ($) | Sep. 30, 2023 Aircraft | Sep. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |
Special charges, net of recoveries |  |  |  |  |  |  | $ 19,400 | $ 35,426
Number of aircraft retired | Aircraft | 21 |  | 2 |  |  |  |  |
Special charges, net of recoveries |  |  |  | $ 32,648 |  | $ 35,142 | 19,828 | $ 35,426
Boeing 2021 Agreement |  |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |
Special charges, net of recoveries |  |  |  | 15,200 |  |  |  |
Hurricane Ian |  |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |
Non-operating special charge |  | $ 52,100 |  |  |  |  |  |
Additional Non-Operating Special Charge |  |  |  | 4,100 |  |  | 4,400 |
Special charges, net of recoveries |  |  |  | 500 | $ 18,100 |  | 13,600 |
Unusual or infrequent item, or both, insurance proceeds |  |  |  | 17,900 |  |  | 18,200 |
Special charges, net of recoveries |  |  |  | $ 17,400 |  |  | 4,600 |
Insurance recoveries |  |  |  |  |  |  | $ 31,700 |
Hurricane Idalia |  |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |
Non-operating special charge |  | $ 13,800 |  |  |  |  |  |

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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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