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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Data [Abstract] |
Schedule of Quarterly Financial Information |
| Quarter Ended
| March 31 |  | June 30 |  | September 30 |  | December 31
2017 |  |  |  |  |  |  |
Total revenue | $ | 447,576 |  |  | $ | 416,629 |  |  | $ | 435,412 |  |  | $ | 480,205 |
Total cost of revenue | 204,676 |  |  | 192,205 |  |  | 204,366 |  |  | 231,069 |
Net revenue | 242,900 |  |  | 224,424 |  |  | 231,046 |  |  | 249,136 |
Total expenses and other income | 190,658 |  |  | 202,956 |  |  | 189,479 |  |  | 192,101 |
Net income | 32,645 |  |  | 15,239 |  |  | 28,274 |  |  | 67,734 |
Diluted net income per share | 0.67 |  |  | 0.32 |  |  | 0.59 |  |  | 1.43 |
Diluted weighted average shares | 48,402 |  |  | 48,289 |  |  | 47,668 |  |  | 47,212 |
2016 |  |  |  |  |  |  |
Total revenue | $ | 183,203 |  |  | $ | 181,979 |  |  | $ | 261,153 |  |  | $ | 462,042 |
Total cost of revenue | 81,340 |  |  | 80,518 |  |  | 113,789 |  |  | 207,927 |
Net revenue | 101,863 |  |  | 101,461 |  |  | 147,364 |  |  | 254,115 |
Total expenses and other income | 82,202 |  |  | 84,215 |  |  | 146,941 |  |  | 197,998 |
Net income (loss) | 13,174 |  |  | 11,673 |  |  | (1,412 | ) |  | 36,692 |
Diluted net income (loss) per share | 0.47 |  |  | 0.41 |  |  | (0.04 | ) |  | 0.76 |
Diluted weighted average shares | 28,241 |  |  | 28,243 |  |  | 34,631 |  |  | 48,532 |

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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=84173487&loc=d3e1280-108306 + Details
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