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Quarterly Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | The following is a summary of our quarterly results of operations for the years ended December 31, 2018 and 2017:
|  | For the Three Months Ended
(In millions except per share data) |  | December 31 |  | September 30 |  | June 30 |  | March 31
Year ended December 31, 2018 |  |  |  |  |  |  |  |
Revenues |  | $ | 338.0 |  |  | $ | 266.7 |  |  | $ | 242.5 |  |  | $ | 184.4 |
Gross profit |  | 222.8 |  |  | 168.6 |  |  | 153.6 |  |  | 118.9 |
Total operating expenses |  | 387.4 |  |  | 154.7 |  |  | 158.5 |  |  | 149.6 |
Net income (loss) |  | (179.7 | ) |  | 46.6 |  |  | 30.2 |  |  | (24.2 | )
Basic net income (loss) per share (a) |  | $ | (2.03 | ) |  | $ | 0.53 |  |  | $ | 0.34 |  |  | $ | (0.28 | )
Diluted net income (loss) per share (a) |  | $ | (2.03 | ) |  | $ | 0.52 |  |  | $ | 0.34 |  |  | $ | (0.28 | )
Year ended December 31, 2017 |  |  |  |  |  |  |  |
Revenues |  | $ | 221.0 |  |  | $ | 184.6 |  |  | $ | 170.6 |  |  | $ | 142.3 |
Gross profit |  | 153.5 |  |  | 127.0 |  |  | 117.5 |  |  | 94.1 |
Total operating expenses |  | 141.5 |  |  | 127.5 |  |  | 131.1 |  |  | 134.5 |
Net income (loss) |  | (9.4 | ) |  | (2.0 | ) |  | 2.9 |  |  | (41.7 | )
Basic net income (loss) per share (a) |  | $ | (0.11 | ) |  | $ | (0.02 | ) |  | $ | 0.03 |  |  | $ | (0.49 | )
Diluted net income (loss) per share (a) |  | $ | (0.11 | ) |  | $ | (0.02 | ) |  | $ | 0.03 |  |  | $ | (0.49 | )
(a) Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

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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=109225645&loc=d3e1280-108306 + Details
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