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LOANS AND LEASES (Schedule of Loans Outstanding, by Type of Loan) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 6,434,369 | $ 6,253,736
Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 100.00% | 100.00%
Unallocated Financing Receivables [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 860 | $ 342
Unallocated Financing Receivables [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 0.00% | 0.00%
Primary Residential Mortgage [Member] | Residential Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 662,949 | $ 647,766
Primary Residential Mortgage [Member] | Residential Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 10.30% | 10.40%
Multifamily Property [Member] | Residential Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 1,824,882 | $ 1,862,592
Multifamily Property [Member] | Residential Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 28.40% | 29.80%
Commercial Mortgage [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 887,712 | $ 774,428
Commercial Mortgage [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 13.80% | 12.40%
Commercial Loans Including Equipment Financing [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 2,788,346 | $ 2,721,447
Commercial Loans Including Equipment Financing [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 43.30% | 43.50%
Construction [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 0.00% | 0.00%
Construction [Member] | Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 695 | $ 495
Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 58,194 | $ 59,306
Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 0.90% | 0.90%
Consumer Loans, Including Home Equity Loans [Member] | Consumer and Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 210,731 | $ 187,360
Consumer Loans, Including Home Equity Loans [Member] | Consumer and Other Loans [Member] | Loans and Finance Receivables, Gross [Member] | Credit Concentration Risk [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans (in percent) | 3.30% | 3.00%

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