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BORROWINGS (Long-Term Debt) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Debt Instrument [Line Items] |  |
Total Long-Term Borrowings | $ 112,740 | $ 126,707
Subordinated Debt | 49,885 | 49,791
Long-term borrowings | 0 | 14,063
Junior Subordinated Debentures [Member] | Capital Trust V Preferred Securities Due in 2037 [Member] |  |
Debt Instrument [Line Items] |  |
Total Long-Term Borrowings | 51,514 | 51,512
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust I Securities Due in 2034 [Member] |  |
Debt Instrument [Line Items] |  |
Total Long-Term Borrowings | 5,258 | 5,258
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust II Securities Due in 2037 [Member] |  |
Debt Instrument [Line Items] |  |
Total Long-Term Borrowings | $ 6,083 | $ 6,083

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