Leases, Commitments, Guarantees and Contingencies (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) aircraft	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) aircraft	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 79,873		$ 79,873		$ 87,731
Current maturities of operating lease liabilities	20,071		20,071		20,467
Noncurrent operating leases	$ 59,802		59,802		$ 67,264
Operating leases			$ 17,000
Weighted-average remaining lease term for operating leases	11 years		11 years
Weighted-average discount rate for operating leases	6.30%		6.30%
Lease costs
Operating lease cost	$ 8,946	$ 6,658	$ 17,196	$ 13,917
Variable and short-term lease cost	639	543	1,128	1,576
Sublease income	(1,004)	(1,268)	(2,119)	(2,514)
Total lease cost	$ 8,581	$ 5,933	$ 16,205	$ 12,979
Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft acquired | aircraft			8
Number of aircraft subleased | aircraft	8		8
Aircraft | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	4 years		4 years
Aircraft | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	5 years		5 years
Airport Facilities | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 month		1 month
Airport Facilities | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	31 years		31 years