AIRCRAFT - Additional Information (Details) - aircraft		3 Months Ended
	Mar. 29, 2023	Mar. 31, 2023	Mar. 31, 2022	Apr. 04, 2023	Dec. 31, 2022	Dec. 31, 2021
AIRCRAFT - Owned and Leased
Number of aircraft		57	50		54	48
Additions	3	3	2
Number of aircraft purchased			2
Number of aircrafts financed using proceeds from issuance of pass-through trust certificates			1
Aircraft Held for Operating Lease
AIRCRAFT - Owned and Leased
Number of aircraft to be purchased		5
Number of aircraft purchased		2
Subsequent Event | Aircraft Held for Operating Lease
AIRCRAFT - Owned and Leased
Number of aircraft purchased				2
Boeing 737-800
AIRCRAFT - Owned and Leased
Number of aircraft		53
Number of aircraft purchased			2
B-737-900
AIRCRAFT - Owned and Leased
Number of aircraft		3
Boeing 737-700
AIRCRAFT - Owned and Leased
Number of aircraft		1
Passenger
AIRCRAFT - Owned and Leased
Number of aircraft		42	38		42	36
Additions		0	2
Number of aircrafts financed		29
Number of aircrafts unencumbered		3