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Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
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Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | $ 1,108,000 | $ 5,793,000
Commercial Portfolio Segment [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 1,088,000 | 5,793,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 221,000 | 16,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 186,000 | 151,000
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 115,000 | 182,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 201,000 | 4,778,000
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 365,000 | 666,000
Retail Portfolio Segment [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 20,000 | 0
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | 14,000 | 0
Retail Portfolio Segment [Member] | 1-4 Family Mortgages [Member] |  |
Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance Related to Troubled Debt Restructurings [Line Items] |  |
Allowance for losses, troubled debt restructurings | $ 6,000 | $ 0

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