SECURITIES - Securities Held-to-Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 391,301	$ 404,765
Unrealized Gains	0	0
Unrealized Losses	(39,232)	(37,377)
Allowance For Credit Losses	0	0
Debt securities held-to-maturity	352,069	367,388
U.S. Government sponsored entities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	302,871	307,711
Unrealized Gains	0	0
Unrealized Losses	(26,628)	(27,276)
Allowance For Credit Losses	0	0
Debt securities held-to-maturity	276,243	280,435
Residential & multi-family mortgage
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	88,430	97,054
Unrealized Gains	0	0
Unrealized Losses	(12,604)	(10,101)
Allowance For Credit Losses	0	0
Debt securities held-to-maturity	$ 75,826	$ 86,953