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Note 3 - Loans and Allowance for Loan Losses - Allowance Related to Troubled Debt Restructurings (Details) - USD ($) | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Related allowance | $ 370,000 | $ 444,000
Commercial Portfolio Segment [Member] |  |
Related allowance | 120,000 | 248,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Related allowance | 55,000 | 107,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Related allowance | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Related allowance | 65,000 | 141,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Related allowance | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Related allowance | 0 | 0
Retail Portfolio Segment [Member] |  |
Related allowance | 250,000 | 196,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Related allowance | 229,000 | 196,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Related allowance | $ 21,000 | $ 0

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- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References No definition available. + Details
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