SECURITIES - Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Securities held-to-maturity:
Amortized Cost	$ 631,334	$ 637,339
Gross Unrecognized Gains	508	169
Gross Unrecognized Losses	(73,056)	(85,231)
Fair Value	558,786	552,277
Agency notes
Securities held-to-maturity:
Amortized Cost	90,082	89,977
Gross Unrecognized Losses	(8,853)	(10,961)
Fair Value	81,229	79,016
Corporate securities
Securities held-to-maturity:
Amortized Cost	13,000	13,000
Gross Unrecognized Gains	200	140
Gross Unrecognized Losses	(710)	(855)
Fair Value	12,490	12,285
Pass-through MBS issued by GSEs
Securities held-to-maturity:
Amortized Cost	295,309	298,697
Gross Unrecognized Gains	99
Gross Unrecognized Losses	(37,675)	(43,716)
Fair Value	257,733	254,981
Agency CMOs
Securities held-to-maturity:
Amortized Cost	232,943	235,665
Gross Unrecognized Gains	209	29
Gross Unrecognized Losses	(25,818)	(29,699)
Fair Value	$ 207,334	$ 205,995