Property and Equipment - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) aircraft	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Property, Plant and Equipment [Line Items]
Impairment of aircraft and related assets | $	$ 39,100	$ 0	$ 0	$ 39,075
Number of retired aircraft	4
Disposal Group, Held-for-sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Number of retired aircraft	3
Disposal Group, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Number of retired aircraft	1
CAM | Flight equipment
Property, Plant and Equipment [Line Items]
Leased aircraft, carrying value | $		$ 1,474,600	$ 1,404,400