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Note 12 - Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions | Oct. 15, 2010 | Dec. 31, 2015 | Dec. 31, 2014
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Stockholders' Equity Note [Abstract] |  |  |
Stock Issued During Period, Shares, Acquisitions | 3,360,000 |  |
Stock Issued During Period at Purchase Price Per Share Acquisition (in Dollars per share) | $ 15.00 |  |
Stock Issued During Period, Value, Acquisitions (in Dollars) | $ 50.4 |  |
Percentage of Shares Sold of Common Stock Issued and Outstanding | 87.60% |  |
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ 0.01 | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 100,000,000 | 100,000,000 | 100,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  | 0 |

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