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LOANS AND CREDIT QUALITY - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Financing Receivable, Impaired [Line Items] |  |
Allowance for unfunded commitments | $ 1,100 | $ 1,800
Accrued interest receivable | 25,100 | 28,900
Loans held for investment ("LHFI") | $ 6,193,053 | $ 7,382,404
Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position, Extensible List Not Disclosed Flag | Accrued interest on LHFI |
Washington | Residential Mortgage and Multifamily |  |
Financing Receivable, Impaired [Line Items] |  |
Percentage of loan portfolio | 13.00% | 11.00%
California | Multifamily |  |
Financing Receivable, Impaired [Line Items] |  |
Percentage of loan portfolio | 30.00% | 36.00%
Federal Home Loan Bank Advances | Asset Pledged as Collateral without Right |  |
Financing Receivable, Impaired [Line Items] |  |
Loans held for investment ("LHFI") | $ 4,000,000 | $ 5,100,000
Federal Reserve Bank Advances | Asset Pledged as Collateral without Right |  |
Financing Receivable, Impaired [Line Items] |  |
Loans held for investment ("LHFI") | $ 1,400,000 | $ 1,200,000

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