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Note 18 - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2015
Note 18 - Stock Repurchase Program (Details) [Line Items] |  |  |
Treasury Stock, Value, Acquired, Cost Method (in Dollars) |  |  | $ 50.7
November 2007 [Member] |  |  |
Note 18 - Stock Repurchase Program (Details) [Line Items] |  |  |
Treasury Stock, Shares, Acquired | 622,500 |  |
Treasury Stock, Value, Acquired, Cost Method (in Dollars) | $ 18.1 |  |
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share) | $ 29.08 |  |
August 2015 [Member] |  |  |
Note 18 - Stock Repurchase Program (Details) [Line Items] |  |  |
Treasury Stock, Shares, Acquired |  | 1,100,000 |
Treasury Stock, Value, Acquired, Cost Method (in Dollars) |  | $ 32.6 |
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share) |  | $ 30.05 |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 2,000,000 |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  | 915,250 | 915,250

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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