CREDIT QUALITY ASSESSMENT - Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 32,205	$ 32,034	$ 44,665	$ 32,193
% of total loan segment	0.30%	0.30%	0.40%	0.30%
Commercial real estate: \| Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 22,938	$ 28,826	$ 34,543	$ 28,893
% of total loan segment	0.50%	0.60%	0.70%	0.60%
Interest rate reduction, Weighted Average	0.00%	2.60%	0.00%	2.60%
Term extension	4 months	5 months	7 months	5 months
Commercial real estate: \| Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 515	$ 2,000	$ 515	$ 2,000
% of total loan segment	0.00%	0.10%	0.00%	0.10%
Interest rate reduction, Weighted Average	0.00%	0.00%	0.00%	0.00%
Term extension	9 months	8 months	9 months	8 months
Commercial real estate: \| Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 0	$ 350	$ 122	$ 350
% of total loan segment	0.00%	0.00%	0.00%	0.00%
Interest rate reduction, Weighted Average	0.00%	0.00%	0.00%	0.00%
Term extension		9 months	17 months	9 months
Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 8,752	$ 858	$ 8,946	$ 950
% of total loan segment	0.50%	0.10%	0.60%	0.10%
Interest rate reduction, Weighted Average	1.90%	0.00%	1.40%	0.00%
Term extension	5 months	8 months	7 months	8 months
All Other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 0	$ 0	$ 539	$ 0
% of total loan segment	0.00%	0.00%	0.00%	0.00%
Interest rate reduction, Weighted Average	0.00%	0.00%	0.00%	0.00%
Term extension			9 months
Interest rate reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 8	$ 28,340	$ 8	$ 28,340
Interest rate reduction \| Commercial real estate: \| Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	28,340	0	28,340
Interest rate reduction \| Commercial real estate: \| Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Interest rate reduction \| Commercial real estate: \| Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Interest rate reduction \| Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	8	0	8	0
Interest rate reduction \| All Other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	32,106	3,694	44,507	3,853
Term extension \| Commercial real estate: \| Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	22,938	486	34,543	553
Term extension \| Commercial real estate: \| Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	515	2,000	515	2,000
Term extension \| Commercial real estate: \| Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	350	122	350
Term extension \| Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	8,653	858	8,788	950
Term extension \| All Other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	539	0
Rate reduction & Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	91	0	150	0
Rate reduction & Term extension \| Commercial real estate: \| Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Rate reduction & Term extension \| Commercial real estate: \| Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Rate reduction & Term extension \| Commercial real estate: \| Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	0	0	0	0
Rate reduction & Term extension \| Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	91	0	150	0
Rate reduction & Term extension \| All Other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 0	$ 0	$ 0	$ 0

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