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Note 15 - Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Quarterly Financial Information [Table Text Block] |
|  | Fiscal Quarter |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
|  | (In millions, except for per share data) |
Year Ended December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (less agency commissions) |  | $ | 518 |  |  | $ | 508 |  |  | $ | 517 |  |  | $ | 579 |
Operating income |  |  | 40 |  |  |  | 119 |  |  |  | 139 |  |  |  | 180 |
Net (loss) income available to common stockholders |  |  | (31 | ) |  |  | 31 |  |  |  | 46 |  |  |  | 81 |
Basic net (loss) income available to common stockholders per share |  | $ | (0.31 | ) |  | $ | 0.31 |  |  | $ | 0.46 |  |  | $ | 0.82 |
Diluted net (loss) income available to common stockholders per share |  | $ | (0.31 | ) |  | $ | 0.31 |  |  | $ | 0.46 |  |  | $ | 0.81 |
Year Ended December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue (less agency commissions) |  | $ | 226 |  |  | $ | 250 |  |  | $ | 279 |  |  | $ | 329 |
Operating income |  |  | 50 |  |  |  | 80 |  |  |  | 108 |  |  |  | 151 |
Net income |  |  | 20 |  |  |  | 41 |  |  |  | 62 |  |  |  | 88 |
Basic net income per share |  | $ | 0.22 |  |  | $ | 0.46 |  |  | $ | 0.71 |  |  | $ | 1.01 |
Diluted net income per share |  | $ | 0.22 |  |  | $ | 0.46 |  |  | $ | 0.70 |  |  | $ | 1.00 |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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