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REVENUE - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
REVENUE - Additional Information (Details) $ in Thousands	Sep. 30, 2025 USD ($) aircraft	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) aircraft	Sep. 30, 2024 USD ($)
REVENUE
Total Operating Revenues	$ 255,538	$ 249,470	$ 845,808	$ 815,334
Credit card program, payment received	$ 1,016		$ 1,016
Cargo \| Aircrafts Operated For Amazon
REVENUE
Number of additional aircrafts \| aircraft			8
Cargo \| Minimum \| Aircrafts Operated For Amazon
REVENUE
Number of cargo aircraft \| aircraft	12
Cargo \| Maximum \| Aircrafts Operated For Amazon
REVENUE
Number of cargo aircraft \| aircraft	20
Rental Revenue
REVENUE
Total Operating Revenues	$ 7,135	10,092	$ 26,751	29,240
Passenger
REVENUE
Total Operating Revenues	$ 201,098	$ 207,764	701,654	$ 698,823
Revenue recognized			$ 155,471