FAIR VALUE OF FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financial Assets
Derivative assets	$ 98,740	$ 116,496
Financial Liabilities
Derivative liabilities	92,516	108,347
Recurring | Fair value hedges
Financial Liabilities
Derivative liabilities	39
Recurring | Cash flow hedges
Financial Assets
Derivative assets	6,591	8,318
Financial Liabilities
Derivative liabilities	313	159
Recurring | Freestanding derivatives, net
Financial Assets
Derivative assets	92,149	108,178
Financial Liabilities
Derivative liabilities	92,149	108,178
Recurring | Risk participations
Financial Liabilities
Derivative liabilities	15	10
Recurring | Level 2 | Fair value hedges
Financial Liabilities
Derivative liabilities	39
Recurring | Level 2 | Cash flow hedges
Financial Assets
Derivative assets	6,591	8,318
Financial Liabilities
Derivative liabilities	313	159
Recurring | Level 2 | Freestanding derivatives, net
Financial Assets
Derivative assets	92,149	108,178
Financial Liabilities
Derivative liabilities	92,149	108,178
Recurring | Level 2 | Risk participations
Financial Liabilities
Derivative liabilities	15	10
Agency notes | Recurring
Financial Assets
Securities available-for-sale:	9,703	9,607
Agency notes | Recurring | Level 2
Financial Assets
Securities available-for-sale:	9,703	9,607
Corporate securities | Recurring
Financial Assets
Securities available-for-sale:	175,536	163,949
Corporate securities | Recurring | Level 2
Financial Assets
Securities available-for-sale:	175,536	163,949
Pass-through MBS issued by GSEs | Recurring
Financial Assets
Mortgage-backed securities	299,513	300,221
Pass-through MBS issued by GSEs | Recurring | Level 2
Financial Assets
Mortgage-backed securities	299,513	300,221
Agency CMOs | Recurring
Financial Assets
Securities available-for-sale:	203,006	191,888
Agency CMOs | Recurring | Level 2
Financial Assets
Securities available-for-sale:	203,006	191,888
State and municipal obligations | Recurring
Financial Assets
Securities available-for-sale:	22,821	25,028
State and municipal obligations | Recurring | Level 2
Financial Assets
Securities available-for-sale:	$ 22,821	$ 25,028