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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans Past Due 90 Days or More and Impaired Loans (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Loans past due 90 days or more and still accruing |  | $ 7 |  | $ 28 | $ 90 |
Ratio of loans past due 90 days or more and still accruing to loans, net of unearned income and deferred fees and costs |  | 0.00% |  | 0.00% | 0.01% |
Accruing restructured loans |  | $ 2,998 |  | $ 3,011 | $ 3,005 |
Impaired loans: |  |  |  |  |  |
Impaired loans with no valuation allowance |  | 5,809 | [1] | 6,774 | 5,878 | [1]
Impaired loans with a valuation allowance |  | 0 |  | 0 | 0 | [1]
Total impaired loans |  | 5,809 | [1] | 6,774 | 5,878 | [1]
Valuation allowance |  | 0 |  | 0 | 0 |
Impaired loans, net of allowance |  | 5,809 |  | 6,774 | 5,878 |
Average recorded investment in impaired loans(1) | [1] | 5,820 |  | 6,796 | 5,901 |
Interest income recognized on impaired loans, after designation as impaired |  | 43 |  | 105 | 137 |
Amount of income recognized on a cash basis |  | $ 0 |  | $ 0 | $ 0 |
[1] | Recorded investment is net of charge-offs and interest paid while a loan is in nonaccrual status.

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