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BORROWINGS (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |
Subordinated Debt | $ 0 | $ 49,980 |
Interest Expense, Long-term Debt | 5,000 | 6,800 | $ 4,600
Federal home loan bank unused remaining available borrowing capacity | 2,600,000 | 2,700,000 |
Total Long-Term Borrowings | 62,860 | 112,838 |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 3,800,000 | 3,900,000 |
Parent Company [Member] | Subordinated Debentures [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Subordinated Debt | 50,000 | 50,000 |
Capital Trust V Preferred Securities Due in 2037 [Member] | Junior Subordinated Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total Long-Term Borrowings | $ 51,519 | 51,517 |
Debt Instrument, interest rate, stated rate inclusive of interest rate swap - expired | 1.48% |  |
Central Bancorp Capital Trust I Securities Due in 2034 [Member] | Junior Subordinated Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total Long-Term Borrowings | $ 5,258 | 5,258 |
Debt Instrument, interest rate, stated rate inclusive of interest rate swap - expired | 2.44% |  |
Single issuer trust preferred securities issued by banks [Member] | Junior Subordinated Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, interest rate, stated rate inclusive of interest rate swap - expired | 4.62% |  |
Federal Home Loan Bank Advances [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Federal home loan bank unused remaining available borrowing capacity | $ 2,000,000 | $ 1,600,000 |

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