SECURITIES - Schedule of HTM securities in a Continuous Unrealized Loss Position Aggregated by Investment Category and Length of Time (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	$ 76,301	$ 394,619
Less than 12 months, Unrecognized Loss	(6,768)	(37,418)
12 months or more, Fair Value	690,606	378,442
12 months or more, Unrecognized Loss	(73,361)	(52,065)
Total, Fair Value	766,907	773,061
Total, Unrecognized Loss	(80,129)	(89,483)
Agency Mortgage-backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	76,301	394,619
Less than 12 months, Unrecognized Loss	(6,768)	(37,418)
12 months or more, Fair Value	690,606	378,442
12 months or more, Unrecognized Loss	(73,361)	(52,065)
Total, Fair Value	766,907	773,061
Total, Unrecognized Loss	$ (80,129)	$ (89,483)