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Note 3 - Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | For the three months ended September 30, |  | For the nine months ended September 30,
|  | 2014 |  | 2013 |  | 2014 |  | 2013
|  |  | (In thousands, except per share data)
Net income, as reported |  | $ | 11,201 |  |  | $ | 9,421 |  |  | $ | 33,182 |  |  | $ | 25,804 |
Divided by: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 29,772 |  |  |  | 29,773 |  |  |  | 29,937 |  |  |  | 30,143 |
Weighted average common stock equivalents |  |  | 24 |  |  |  | 32 |  |  |  | 31 |  |  |  | 25 |
Total weighted average common shares outstanding and common stock equivalents |  |  | 29,796 |  |  |  | 29,805 |  |  |  | 29,968 |  |  |  | 30,168 |
Basic earnings per common share |  | $ | 0.38 |  |  | $ | 0.32 |  |  | $ | 1.11 |  |  | $ | 0.86 |
Diluted earnings per common share(1) |  | $ | 0.38 |  |  | $ | 0.32 |  |  | $ | 1.11 |  |  | $ | 0.86 |
Dividend payout ratio |  |  | 39.5 | % |  |  | 40.6 | % |  |  | 40.5 | % |  |  | 45.3 | %

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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