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LOANS AND LEASES - Additional Information (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) Loan | Dec. 31, 2024 USD ($)
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Loan receivable, validate risk ratings performed for large sample or new lending to existing relationships | $ 1,000,000 |
Loan receivable, validate risk ratings performed for criticized and classified rated borrowers with relationship exposure, value | 500,000 |
Loan receivable, validate risk ratings performed for new federal reserve board regulation "O" loan commitments, value | 1,000,000 |
Loan receivable validate risk ratings performed for leveraged loans, value | 1,000,000 |
Loan receivable validate risk ratings performed for no borrower with commitments, value | 500,000 |
Allowance for credit losses, recorded investment nonaccrual status | 114,958,000 | $ 100,168,000
Multifamily Property [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable increase in special mention loans | $ 21,000,000 |
Primary Residential Mortgages [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Number of loans modified | Loan | 1 |
Financing receivable modified in period amount | $ 289,000 |
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable increase in special mention loans | 22,300,000 |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Allowance for credit losses, recorded investment nonaccrual status | 42,909,000 | 30,881,000
Multifamily Loans [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable modified in period amount | 100,500,000 |
Commercial and Industrial Loans [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable increase in special mention loans | $ 6,900,000 |
Number of loans modified | Loan | 1 |
Financing receivable modified in period amount | $ 11,300,000 |
Substandard [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable individually evaluated loan | 115,000,000 | $ 99,800,000
Substandard [Member] | Multifamily Loans [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable increase in special mention loans | $ 4,800,000 |
Number of multifamily loans | Loan | 1 |
Substandard [Member] | Commercial and Industrial Loans [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Financing receivable increase in special mention loans | $ 14,500,000 |
Number of commercial and industrial loans | Loan | 2 |
Minimum [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Loan receivable, validate risk ratings performed for large sample of borrowers with relationship, value | $ 1,000,000 |
Maximum [Member] |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Loan receivable, validate risk ratings performed for small sample of borrowers with relationship, value | $ 1,000,000 |

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