SECURITIES AND OTHER INVESTMENTS - Amortized Cost and Fair Values of Securities Available for Sale at by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Amortized Cost
Due in less than one year	$ 222,169
Due in one year through five years	172,291
Due after five years through ten years	229,760
Due after ten years	144,474
Allocated and single maturity date	768,694
Amortized Cost	996,344	$ 917,412
Fair Value
Due in less than one year	218,033
Due in one year through five years	163,466
Due after five years through ten years	203,039
Due after ten years	132,148
Allocated and single maturity date	716,686
Fair Value	917,618	921,661
Amortized Cost
Due in less than one year	1,774
Due in one year through five years	513,181
Due after five years through ten years	22,600
Due after ten years	3,711
Allocated and single maturity date	541,266
Total	679,128
Fair Value
Due in less than one year	1,748
Due in one year through five years	476,365
Due after five years through ten years	20,485
Due after ten years	3,643
Allocated and single maturity date	502,241
Fair Value	623,352	648,394
Mortgage-backed securities
Amortized Cost
Mortgage-backed securities	227,650
Amortized Cost	227,650	270,017
Fair Value
Mortgage-backed securities	200,932
Fair Value	200,932	271,262
Amortized Cost
Mortgage-backed securities	137,862
Fair Value
Mortgage-backed securities	121,111
Fair Value	$ 121,111	$ 99,611