SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Other Non-current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Accounting Policies [Abstract]
Lease incentives	$ 43,688	$ 56,812
Deferred tax assets	31,920	42,893
Financing receivable resulting from failed sale-leaseback transactions	19,109	28,412
Maintenance right assets	6,374	25,907
Other	65,969	54,406
Other non-current assets	$ 167,060	$ 208,430