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Note 12 - Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Quarterly Financial Information [Table Text Block] |
|  | Fiscal Quarter |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
|  | (In thousands, except for per share data) |
Year Ended December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (less agency commissions) |  | $ | 173,723 |  |  | $ | 196,633 |  |  | $ | 204,490 |  |  | $ | 237,619 |
Operating income |  |  | 36,111 |  |  |  | 53,687 |  |  |  | 60,467 |  |  |  | 83,874 |
Net income |  |  | 8,990 |  |  |  | 17,662 |  |  |  | (213 | ) |  |  | 35,834 |
Basic net income per share |  | $ | 0.13 |  |  | $ | 0.25 |  |  | $ | - |  |  | $ | 0.50 |
Diluted net income per share |  | $ | 0.12 |  |  | $ | 0.24 |  |  | $ | - |  |  | $ | 0.49 |
Year Ended December 31, 2015: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (less agency commissions) |  | $ | 133,303 |  |  | $ | 143,464 |  |  | $ | 151,102 |  |  | $ | 169,487 |
Operating income |  |  | 28,058 |  |  |  | 38,758 |  |  |  | 29,344 |  |  |  | 43,897 |
Net income |  |  | 5,595 |  |  |  | 12,110 |  |  |  | 6,609 |  |  |  | 14,987 |
Basic net income per share |  | $ | 0.10 |  |  | $ | 0.17 |  |  | $ | 0.09 |  |  | $ | 0.21 |
Diluted net income per share |  | $ | 0.10 |  |  | $ | 0.17 |  |  | $ | 0.09 |  |  | $ | 0.21 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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