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Note 3 - Loans and Allowance for Loan Losses (Details) - Loans Modified as Troubled Debt Restructurings | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($)
Originated Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 4 | 9 | 6
Loans modified, pre-modification recorded principal balance | $ 0 | $ 22,781,000 | $ 1,876,000 | $ 23,923,000
Loans modified, post-modification recorded principal balance | $ 0 | $ 22,881,000 | $ 1,901,000 | $ 24,023,000
Acquired Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 1 | 0 | 11 | 0
Loans modified, pre-modification recorded principal balance | $ 237,000 | $ 0 | $ 1,209,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 237,000 | $ 0 | $ 1,209,000 | $ 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 4 | 9 | 6
Loans modified, pre-modification recorded principal balance | $ 0 | $ 22,781,000 | $ 1,876,000 | $ 23,923,000
Loans modified, post-modification recorded principal balance | $ 0 | $ 22,881,000 | $ 1,901,000 | $ 24,023,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 2 | 9 | 2
Loans modified, pre-modification recorded principal balance | $ 0 | $ 5,994,000 | $ 1,876,000 | $ 5,994,000
Loans modified, post-modification recorded principal balance | $ 0 | $ 6,094,000 | $ 1,901,000 | $ 6,094,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 2 | 0 | 3
Loans modified, pre-modification recorded principal balance | $ 0 | $ 16,787,000 | $ 0 | $ 17,783,000
Loans modified, post-modification recorded principal balance | $ 0 | $ 16,787,000 | $ 0 | $ 17,783,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 1
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 146,000
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 146,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 1 | 0 | 11 | 0
Loans modified, pre-modification recorded principal balance | $ 237,000 | $ 0 | $ 1,209,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 237,000 | $ 0 | $ 1,209,000 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 2 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 286,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 286,000 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 3 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 66,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 66,000 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 1 | 0 | 4 | 0
Loans modified, pre-modification recorded principal balance | $ 237,000 | $ 0 | $ 655,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 237,000 | $ 0 | $ 655,000 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 2 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 202,000 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 202,000 | $ 0
Retail Portfolio Segment [Member] | Originated Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Originated Loan [Member] | Home Equity and Other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Originated Loan [Member] | 1-4 Family Mortgages [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Acquired Loan [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Acquired Loan [Member] | Home Equity and Other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Acquired Loan [Member] | 1-4 Family Mortgages [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans modified, number of contracts | 0 | 0 | 0 | 0
Loans modified, pre-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0
Loans modified, post-modification recorded principal balance | $ 0 | $ 0 | $ 0 | $ 0

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