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FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS - Summary of Advances From the FHLB (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Fixed rate: |  |
Outstanding balance | $ 411,000 | $ 461,000
Variable rate: |  |
Outstanding balance | $ 0 | $ 85,000
Weighted average interest rate (percent) | 0.00% | 0.17%
Unamortized debt issuance costs | $ 5,300 | $ 6,200
Advance Maturing May 27, 2021 |  |
Fixed rate: |  |
Outstanding balance | $ 0 | $ 5,000
Advances Maturing November 27, 2020 and May 27, 2021 |  |
Fixed rate: |  |
Interest rate (percent) | 0.00% | 0.00%
Minimum |  |
Fixed rate: |  |
Interest rate (percent) | 0.64% | 0.00%
Maximum |  |
Fixed rate: |  |
Interest rate (percent) | 3.32% | 3.32%
Weighted average (percent) |  |
Fixed rate: |  |
Interest rate (percent) | 2.53% | 2.51%

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- Definition Federal Home Loan Bank, Advances, General Debt Obligations, Disclosure, Weighted Average Interest Rate, Variable + References No definition available. + Details
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- Definition Amount of unearned commitment fees on advances made and reported by Federal Home Loan Bank (FHLBank). + References No definition available. + Details
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