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Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans - USD ($) | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | $ 4,842,000 | $ 5,444,000
Originated Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Originated Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Nonaccrual loans | 1,702,000 | 1,954,000
Total nonperforming loans | 1,702,000 | 1,954,000
Acquired Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 5,000
Acquired Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 5,000
Nonaccrual loans | 3,140,000 | 3,485,000
Total nonperforming loans | 3,140,000 | 3,490,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 2,399,000 | 2,646,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 486,000 | 458,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 140,000 | 155,000
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 1,641,000 | 1,797,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 51,000 | 79,000
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 81,000 | 157,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Commercial and Industrial [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Commercial and Industrial [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 2,443,000 | 2,798,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 611,000 | 771,000
Retail Portfolio Segment [Member] | 1-4 Family Mortgages [Member] | Nonperforming Financial Instruments [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Total nonperforming loans | 1,832,000 | 2,027,000
Retail Portfolio Segment [Member] | Originated Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Retail Portfolio Segment [Member] | Originated Loan [Member] | Home Equity and Other [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Retail Portfolio Segment [Member] | Originated Loan [Member] | 1-4 Family Mortgages [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 0
Retail Portfolio Segment [Member] | Acquired Loan [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 5,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | Home Equity and Other [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | 0 | 5,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | 1-4 Family Mortgages [Member] |  |
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items] |  |
Loans past due 90 days or more still accruing interest | $ 0 | $ 0

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