ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Amortized Cost of Loans Received Term Extension Modification (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 54,798	$ 44,279	$ 126,742	$ 79,536
Loans Modified
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total			5,435	3,931
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total			5,435	3,870
More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total				61
Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	30,905	41,527	101,305	73,501
Commercial | Commercial mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	22,599	83	59,276	83
Commercial | Commercial mortgages | Loans Modified
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total			5,435
Commercial | Commercial mortgages | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total			5,435
Commercial | Commercial mortgages | Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	16,029	83	52,706	83
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	32,174	30,773	33,166	63,563
Commercial | Commercial and industrial | Loans Modified
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total				3,931
Commercial | Commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total				3,870
Commercial | Commercial and industrial | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total				61
Commercial | Commercial and industrial | Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	14,874	30,075	15,801	61,803
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	25	2,310	596	4,777
Consumer | Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 2	$ 256	$ 2	$ 502