DEPOSITS - Summary of Certain Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Non-interest bearing demand deposits	$ 1,736,761	$ 1,895,481
Savings and transaction accounts:
Savings deposits	403,773	409,343
Interest bearing demand deposits	3,723,859	3,839,926
Time deposits:
Other time deposits	170,759	202,395
Deposits of $100,000 to $250,000	185,194	227,606
Deposits of $250,000 or more	270,233	399,517
Total deposits	5,460,620	5,735,407
Interest bearing demand deposits
Savings and transaction accounts:
Interest bearing demand deposits	$ 2,693,900	$ 2,601,065