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Note 3 - Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings Within the Previous Twelve Months That Became Over 30 Days Past Due (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residentia lRental Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] | Retail Portfolio Segment [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Originated Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 1 | 0 | 1
Recorded Principal Balance | $ 0 | $ 18,000 | $ 0 | $ 18,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residentia lRental Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Number of Contracts | 0 | 1 | 0 | 1
Recorded Principal Balance | $ 0 | $ 18,000 | $ 0 | $ 18,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] | Retail Portfolio Segment [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Acquired Loan [Member] |  |  |  |
Number of Contracts | 0 | 1 | 0 | 1
Recorded Principal Balance | $ 0 | $ 18,000 | $ 0 | $ 18,000

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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
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