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v3.25.2

LOANS & ALLOWANCE FOR CREDIT LOSSES - NARRATIVE (Details) |  | 12 Months Ended
--- | --- | ---
Dec. 07, 2023 loanPortfolio | Jun. 30, 2025 USD ($) segment | Jun. 30, 2024 USD ($)
Financing Receivable, Impaired [Line Items] |  |  |
Number of loan portfolio segments | 2 | 5 |
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] |  | Other assets | Other assets
Accrued interest receivable |  | $ 109,600,000 | $ 119,800,000
Advances, collateral pledged |  | 4,284,700,000 | 4,942,800,000
FRBSF and FRB, loans pledged |  | 8,227,700,000 | 8,197,200,000
Nonaccrual loans, without an allowance |  | 0 | 0
Interest recognized on performing loans temporarily modified as TDRs |  | 0 | 0
Loans past due ninety days or more and still accruing |  | 0 | 20,200,000
Mortgage loans in process of foreclosure, amount |  | $ 30,400,000 | $ 20,100,000
California | Financing Receivable | Geographic Concentration Risk | Single Family - Mortgage & Warehouse |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 70.50% | 69.30%
California | Financing Receivable | Geographic Concentration Risk | Multifamily Loan Category |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 48.50% | 49.60%
New York | Financing Receivable | Geographic Concentration Risk | Single Family - Mortgage & Warehouse |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 8.60% | 11.70%
New York | Financing Receivable | Geographic Concentration Risk | Multifamily Loan Category |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 37.10% | 38.90%
New York | Financing Receivable | Geographic Concentration Risk | Commercial Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 36.80% | 34.20%
FLORIDA | Financing Receivable | Geographic Concentration Risk | Commercial Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 19.50% | 10.40%
TEXAS | Financing Receivable | Geographic Concentration Risk | Commercial Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Concentration risk percentage |  | 10.20% |

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