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ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details) - USD ($)	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment Past Due [Line Items]
Accrued interest receivable	$ 33,209,000		$ 29,898,000
Individually evaluated include Nonaccrual loans	115,000,000		99,800,000
Individually evaluated non accrual loans performing modified loans	0
Allowance allocated to modified loans	893,000
Allowance for credit losses	81,770,000	$ 75,150,000	$ 72,992,000	$ 67,984,000	$ 66,251,000	$ 65,888,000
Allowance for credit losses, due to specific reserves	$ 5,800,000
Allowance for credit losses, percentage of loans	1.41%		1.32%
Commercial and Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Allowance for credit losses, due to specific reserves	$ 5,200,000
Multifamily Property [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Allowance for credit losses, due to specific reserves	1,900,000
Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Accrued interest receivable	$ 29,700,000		$ 26,200,000

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Percentage of allowance for credit loss to total financing receivable outstanding.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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