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Note 25 - Subsequent Events (Details Textual) $ in Thousands, shares in Millions | 7 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Assets, Total |  | $ 950,932 | $ 800,048
Loans and Leases Receivable, Net Amount, Total |  | 622,429 | 569,412
Deposits, Total |  | 842,461 | $ 706,442
The Bank of Fincastle [Member] |  |  |
Assets, Total |  | 255,900 |
Loans and Leases Receivable, Net Amount, Total |  | 198,400 |
Deposits, Total |  | $ 224,300 |
Forecast [Member] | The Bank of Fincastle [Member] |  |  |
Business Combination, Consideration Transferred, Total | $ 31,600 |  |
Number of Retail Bank Offices Acquired | 6 |  |
Payments to Acquire Businesses, Gross | $ 6,700 |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares | 1.3 |  |

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