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Quarterly financial data (unaudited) | 12 Months Ended
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Sep. 28, 2019
Quarterly Financial Information Disclosure [Abstract] |
Quarterly financial data (unaudited) | Quarterly financial data (unaudited) The following table shows a summary of the Company’s unaudited quarterly financial information for each of the four quarters of 2019 and 2018 (the sum of quarterly periods may not equal full-year amounts due to rounding):
| Three Months Ended
| September 28, 2019 |  | June 29, 2019 |  | March 30, 2019 |  | December 29, 2018
(In thousands, except per share amounts) |  |  |  |  |  |  |
Revenue | $ | 294,160 |  |  | $ | 260,119 |  |  | $ | 210,173 |  |  | $ | 496,371 |
Gross profit | 124,271 |  |  | 117,370 |  |  | 90,413 |  |  | 195,289 |
Net income (loss) | (29,600 | ) |  | (14,009 | ) |  | (22,824 | ) |  | 61,667 |
Net income (loss) per share - basic | $ | (0.28 | ) |  | $ | (0.13 | ) |  | $ | (0.22 | ) |  | $ | 0.62 |
Net income (loss) per share - diluted | $ | (0.28 | ) |  | $ | (0.13 | ) |  | $ | (0.22 | ) |  | $ | 0.55 |
| Three Months Ended
| September 29, 2018 |  | June 30, 2018 |  | March 31, 2018 |  | December 30, 2017
(In thousands, except per share amounts) |  |  |  |  |  |  |
Revenue | $ | 272,940 |  |  | $ | 208,398 |  |  | $ | 186,720 |  |  | $ | 468,950 |
Gross profit | 116,277 |  |  | 95,489 |  |  | 81,341 |  |  | 196,201 |
Net income (loss) | (1,720 | ) |  | (26,988 | ) |  | (32,592 | ) |  | 45,697 |
Net income (loss) per share - basic | $ | (0.02 | ) |  | $ | (0.45 | ) |  | $ | (0.55 | ) |  | $ | 0.42 |
Net income (loss) per share - diluted | $ | (0.02 | ) |  | $ | (0.45 | ) |  | $ | (0.55 | ) |  | $ | 0.36 |

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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