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Note 11 - Capital Stock (Details Textual) - USD ($) |  | 10 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 27, 2015 | Dec. 31, 2016 | Feb. 18, 2016 | Dec. 31, 2013 | Dec. 31, 2015 | Mar. 04, 2014 | Jul. 23, 2012 | Feb. 27, 2009
Preferred Stock, Shares Authorized |  |  |  |  | 40,040,000 |  |  | 40,040,000
Preferred Stock, Par or Stated Value Per Share |  |  |  |  | $ 0.01 |  |  | $ 0.01
Preferred Stock, Dividend Rate, Percentage |  | 9.00% | 1.00% |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  |  |  |  | 850,000 |
Percent of Oustanding Stock |  |  |  |  |  |  | 5.00% |
Stock Repurchased During Period, Shares |  |  |  | 419,564 |  |  |  |
Stock Repurchased Weighted Average Price |  |  |  | $ 25.89 |  |  |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  |  |  | 154,136 |  |  |  |
Shelf Registration Statement Max Capital Allowed to Raise |  |  |  |  |  | $ 300,000,000 |  |
Community First Bancshares Inc [Member] |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 6,552,915 |  |  |  |  |  |  |
Community First Bancshares Inc [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 30,852 |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference, Value |  |  |  |  |  |  |  | $ 80,000,000

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- Definition Maximum amount of capital allowed to raise according to the shelf registration statement. + References No definition available. + Details
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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