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FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Narrative Disclosures) (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2020
Debt Disclosure [Abstract] |  |  |  |
Line of credit commitment fee | $ 3,000 | $ 3,000 |  |
Short-term Debt [Line Items] |  |  |  |
Borrowed funds | $ 458,482,000 |  |  | $ 429,229,000
Borrowed funds, interest rate during period | 1.91% |  |  | 1.91%
Federal Reserve PPPLF |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Borrowed funds | $ 0 |  | $ 29,600,000 | $ 0
Borrowed funds, interest rate during period | 0.00% |  | 0.35% | 0.35%
Other borrowings |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Borrowed funds | $ 8,860,000 |  |  | $ 920,000
Borrowed funds, interest rate during period | 5.05% |  |  | 12.60%

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