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BORROWED FUNDS AND SUBORDINATED DEBT - Long term Borrowing Additional Information (Details) | Sep. 30, 2020 | Dec. 31, 2019
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Debt Instrument [Line Items] |  |
Rate | 1.36% | 1.36%
Loans matured in 2020 with a weighted-average rate of 2.71% |  |
Debt Instrument [Line Items] |  |
Rate | 2.71% | 2.71%
Loans maturing in 2022 with a weighted-average effective rate of 1.40% |  |
Debt Instrument [Line Items] |  |
Rate | 1.40% | 1.40%
Loans maturing in 2023 with a weighted-average effective rate of 1.44% |  |
Debt Instrument [Line Items] |  |
Rate | 1.44% | 1.44%
Loans maturing in 2024 with a weighted-average effective rate of 1.06% |  |
Debt Instrument [Line Items] |  |
Rate | 1.06% | 1.06%
Loan maturing in 2025 with a rate of 4.91% |  |
Debt Instrument [Line Items] |  |
Rate | 4.91% | 4.91%

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- Definition The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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