Commitments and Contingencies - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) aircraft	Mar. 31, 2022 USD ($)	Dec. 31, 2023 aircraft	Dec. 31, 2022	Aug. 07, 2022 aircraft hangar
Other Commitments [Line Items]
Right-of-use asset obtained in exchange for operating lease liability | $	$ 0.4	$ 2.9
Operating lease, weighted average discount rate, percent	3.40%			3.20%
Operating lease, weighted average remaining lease, term (in years)	4 years 2 months 12 days			4 years 3 months 18 days
Operating lease, payments | $	$ 6.6	$ 5.2
Contractual obligation | $	583.9
Contractual obligation, to be paid, year one | $	$ 200.5
Number of aircrafts					3
Number of aircraft hangars | hangar					1
Property Leases | Minimum
Other Commitments [Line Items]
Lessee, operating lease, term of contract	1 month
Property Leases | Maximum
Other Commitments [Line Items]
Lessee, operating lease, term of contract	9 years
Equipment Leases | Minimum
Other Commitments [Line Items]
Lessee, operating lease, term of contract	1 month
Equipment Leases | Maximum
Other Commitments [Line Items]
Lessee, operating lease, term of contract	5 years
Aircraft Provided By Customers
Other Commitments [Line Items]
Lessee, number of leased aircraft	13
Aircraft Leased From External Customers
Other Commitments [Line Items]
Lessee, number of leased aircraft	4
Operating
Other Commitments [Line Items]
Number of aircrafts					1
Inoperative
Other Commitments [Line Items]
Number of aircrafts					2
B-767-300
Other Commitments [Line Items]
Number of owned aircrafts			18
Number of aircrafts to be purchased			12
A-321-200
Other Commitments [Line Items]
Number of owned aircrafts			9
A-330-200
Other Commitments [Line Items]
Number of aircrafts to be purchased			5