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Note 3 - Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2021
With no related allowance recorded, unpaid principal balance |  | $ 16,997,000
With no related allowance recorded, principal balance |  | 15,715,000
With no related allowance recorded, average recorded principal balance | $ 22,826,000 |
With related allowance recorded, unpaid principal balance |  | 3,671,000
With related allowance recorded, principal balance |  | 3,651,000
Related allowance |  | 546,000
With related allowance recorded, average recorded principal balance | 2,069,000 |
Total unpaid principal balance |  | 20,668,000
Total principal balance |  | 19,366,000
Total average recorded principal balance | 24,895,000 |
Commercial Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 12,658,000
With no related allowance recorded, principal balance |  | 12,583,000
With no related allowance recorded, average recorded principal balance | 19,313,000 |
With related allowance recorded, unpaid principal balance |  | 3,099,000
With related allowance recorded, principal balance |  | 3,099,000
Related allowance |  | 354,000
With related allowance recorded, average recorded principal balance | 1,137,000 |
Total unpaid principal balance |  | 15,757,000
Total principal balance |  | 15,682,000
Total average recorded principal balance | 20,450,000 |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 2,893,000
With no related allowance recorded, principal balance |  | 2,818,000
With no related allowance recorded, average recorded principal balance | 4,913,000 |
With related allowance recorded, unpaid principal balance |  | 2,192,000
With related allowance recorded, principal balance |  | 2,192,000
Related allowance |  | 266,000
With related allowance recorded, average recorded principal balance | 345,000 |
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 0
With no related allowance recorded, principal balance |  | 0
With no related allowance recorded, average recorded principal balance | 0 |
With related allowance recorded, unpaid principal balance |  | 0
With related allowance recorded, principal balance |  | 0
Related allowance |  | 0
With related allowance recorded, average recorded principal balance | 0 |
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 9,674,000
With no related allowance recorded, principal balance |  | 9,674,000
With no related allowance recorded, average recorded principal balance | 14,074,000 |
With related allowance recorded, unpaid principal balance |  | 761,000
With related allowance recorded, principal balance |  | 761,000
Related allowance |  | 84,000
With related allowance recorded, average recorded principal balance | 632,000 |
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 0
With no related allowance recorded, principal balance |  | 0
With no related allowance recorded, average recorded principal balance | 326,000 |
With related allowance recorded, unpaid principal balance |  | 146,000
With related allowance recorded, principal balance |  | 146,000
Related allowance |  | 4,000
With related allowance recorded, average recorded principal balance | 160,000 |
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 91,000
With no related allowance recorded, principal balance |  | 91,000
With no related allowance recorded, average recorded principal balance | 0 |
With related allowance recorded, unpaid principal balance |  | 0
With related allowance recorded, principal balance |  | 0
Related allowance |  | 0
With related allowance recorded, average recorded principal balance | 0 |
Retail Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 4,339,000
With no related allowance recorded, principal balance |  | 3,132,000
With no related allowance recorded, average recorded principal balance | 3,513,000 |
With related allowance recorded, unpaid principal balance |  | 572,000
With related allowance recorded, principal balance |  | 552,000
Related allowance |  | 192,000
With related allowance recorded, average recorded principal balance | 932,000 |
Total unpaid principal balance |  | 4,911,000
Total principal balance |  | 3,684,000
Total average recorded principal balance | 4,445,000 |
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 1,173,000
With no related allowance recorded, principal balance |  | 1,107,000
With no related allowance recorded, average recorded principal balance | 963,000 |
With related allowance recorded, unpaid principal balance |  | 160,000
With related allowance recorded, principal balance |  | 140,000
Related allowance |  | 123,000
With related allowance recorded, average recorded principal balance | 267,000 |
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
With no related allowance recorded, unpaid principal balance |  | 3,166,000
With no related allowance recorded, principal balance |  | 2,205,000
With no related allowance recorded, average recorded principal balance | 2,550,000 |
With related allowance recorded, unpaid principal balance |  | 412,000
With related allowance recorded, principal balance |  | 412,000
Related allowance |  | $ 69,000
With related allowance recorded, average recorded principal balance | $ 665,000 |

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