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Note 13 - Regulatory Matters (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 16, 2015 | Jun. 24, 2015 | Apr. 16, 2015 | Mar. 25, 2015 | Jan. 15, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Jan. 30, 2015 | Dec. 31, 2014 | Dec. 31, 2009
Note 13 - Regulatory Matters (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Trust Preferred Securities Included in Tier One Capital |  |  |  |  |  | $ 52.7 |  | $ 52.7 |  |  | $ 52.4 |
Maximum Restricted Core Element Allowed in Tier One Capital, Percent |  |  |  |  |  |  |  | 25.00% |  |  |  |
Maximum Level of Consolidated Aggregate Assets Allowing for Inclusion of Trust Preferred Securities in Tier One Capital |  |  |  |  |  |  |  |  |  |  |  | $ 15,000.0
Preferred Securities of Subsidiary Trust |  |  |  |  |  | $ 52.7 |  | $ 52.7 |  |  | $ 52.4 |
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) |  | $ 0.14 |  | $ 0.14 |  | $ 0.14 | $ 2.12 | $ 0.28 | $ 2.24 |  |  |
Common Stock, Dividends, Per Share, Declared (in Dollars per share) |  |  | $ 0.14 |  | $ 0.14 |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  |  |  | $ 20.0 |  |
Repurchased Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Note 13 - Regulatory Matters (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Shares (in Shares) |  |  |  |  |  |  |  | 463,000 |  |  |  |
Share Price (in Dollars per share) |  |  |  |  |  | $ 19.67 |  | $ 19.67 |  |  |  |
Stock Repurchased During Period, Value |  |  |  |  |  |  |  | $ 9.1 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Note 13 - Regulatory Matters (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared (in Dollars per share) | $ 0.15 |  |  |  |  |  |  |  |  |  |  |

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- Definition The maximum level of consolidated aggregate assets allowing for inclusion of trust preferred securities in Tier 1 Capital under the Dodd-Frank Act. + References No definition available. + Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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