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Note 3 - Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 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 | $ 19,863,000 | $ 21,488,000 |
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 | 3,512,000 | 3,082,000 |
Total unpaid principal balance |  |  | 20,668,000
Total principal balance |  |  | 19,366,000
Total average recorded principal balance | 23,375,000 | 24,570,000 |
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 | 16,399,000 | 17,992,000 |
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 | 2,689,000 | 2,206,000 |
Total unpaid principal balance |  |  | 15,757,000
Total principal balance |  |  | 15,682,000
Total average recorded principal balance | 19,088,000 | 20,198,000 |
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 | 3,129,000 | 4,167,000 |
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 | 1,661,000 | 1,222,000 |
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 | 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 | 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 | 13,114,000 | 13,607,000 |
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 | 872,000 | 826,000 |
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 | 156,000 | 218,000 |
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 | 156,000 | 158,000 |
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 | 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 | 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 | 3,464,000 | 3,496,000 |
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 | 823,000 | 876,000 |
Total unpaid principal balance |  |  | 4,911,000
Total principal balance |  |  | 3,684,000
Total average recorded principal balance | 4,287,000 | 4,372,000 |
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 | 1,088,000 | 1,054,000 |
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 | 242,000 | 256,000 |
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 |  |  | 2,025,000
With no related allowance recorded, average recorded principal balance | 2,376,000 | 2,442,000 |
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 | $ 581,000 | $ 620,000 |

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