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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Selected Quarterly Financial Information Data |
| Quarter Ended
| April 1, 2018 |  | July 1, 2018 |  | September 30, 2018 |  | December 31, 2018
| (In thousands, except per share amounts)
Revenue | $ | 169,567 |  |  | $ | 211,264 |  |  | $ | 232,221 |  |  | $ | 193,286 |
Gross margin | 129,369 |  |  | 157,095 |  |  | 173,361 |  |  | 140,461 |
Operating income | 34,596 |  |  | 63,455 |  |  | 77,844 |  |  | 45,247 |
Net income | $ | 37,217 |  |  | $ | 56,196 |  |  | $ | 80,436 |  |  | $ | 45,418 |
Basic net income per share | $ | 0.21 |  |  | $ | 0.33 |  |  | $ | 0.47 |  |  | $ | 0.26 |
Diluted net income per share | $ | 0.21 |  |  | $ | 0.32 |  |  | $ | 0.45 |  |  | $ | 0.26 |
| Quarter Ended
| April 2, 2017 |  | July 2, 2017 |  | October 1, 2017 |  | December 31, 2017
| (In thousands, except per share amounts)
Revenue | $ | 139,039 |  |  | $ | 178,080 |  |  | $ | 266,042 |  |  | $ | 182,922 |
Gross margin | 106,507 |  |  | 135,916 |  |  | 197,981 |  |  | 138,390 |
Operating income | 37,216 |  |  | 60,021 |  |  | 110,849 |  |  | 50,775 |
Net income (loss) | $ | 45,471 |  |  | $ | 56,495 |  |  | $ | 102,493 |  |  | $ | (27,747 | )
Basic net income (loss) per share (1) | $ | 0.26 |  |  | $ | 0.33 |  |  | $ | 0.59 |  |  | $ | (0.16 | )
Diluted net income (loss) per share (1) (2) | $ | 0.25 |  |  | $ | 0.32 |  |  | $ | 0.57 |  |  | $ | (0.16 | )

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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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