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Note 4 - Loans and Allowance for Loan Losses - Loans Restructured as TDRs, Excluding Loans Acquired, Segregated by Class of Loans (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Financing Receivable, Modifications, Number of Contracts | 70 | 18
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 13,907 | $ 2,636
Balance | 13,757 | 2,545
Extended Maturity [Member] |  |
Modification | 12,071 | $ 2,545
Contractual Interest Rate Reduction [Member] |  |
Modification | $ 1,686 |
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 2 | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 50 | $ 13
Balance | 11 | 13
Consumer Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modification | $ 11 | $ 13
Consumer Portfolio Segment [Member] | Other Consumer [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 2 | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 50 | $ 13
Balance | 11 | 13
Consumer Portfolio Segment [Member] | Other Consumer [Member] | Extended Maturity [Member] |  |
Modification | $ 11 | $ 13
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 51 | 12
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 11,861 | $ 2,276
Balance | 11,778 | 2,200
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modification | 10,092 | $ 2,200
Commercial Real Estate Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |
Modification | $ 1,686 |
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 23 | 11
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 1,570 | $ 1,179
Balance | 1,518 | 1,103
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Extended Maturity [Member] |  |
Modification | 964 | $ 1,103
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member] | Contractual Interest Rate Reduction [Member] |  |
Modification | $ 554 |
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 28 | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 10,291 | $ 1,097
Balance | 10,260 | 1,097
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Extended Maturity [Member] |  |
Modification | 9,128 | $ 1,097
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Loans [Member] | Contractual Interest Rate Reduction [Member] |  |
Modification | $ 1,132 |
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Modifications, Number of Contracts | 17 | 5
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 1,996 | $ 347
Balance | 1,968 | 332
Commercial Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modification | $ 1,968 | $ 332

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