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Summary of Quarterly Financial Data (unaudited) | 12 Months Ended
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Dec. 28, 2019
Summary Of Quarterly Financial Data Unaudited [Abstract] |
Summary of Quarterly Financial Data (unaudited) | (14) Summary of Quarterly Financial Data (unaudited) The following is a condensed summary of our quarterly results (in thousands, except net income per share amounts). Quarterly diluted net income per share amounts may not total to the respective annual amount due to changes in weighted-average shares outstanding during the year.
|  | Quarter |  |  |  |  |
|  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | 2019 |
Net sales |  | $ | 426,445 |  |  | $ | 355,963 |  |  | $ | 474,778 |  |  | $ | 441,166 |  |  | $ | 1,698,352 |
Gross profit |  |  | 262,233 |  |  |  | 217,186 |  |  |  | 296,390 |  |  |  | 276,114 |  |  |  | 1,051,923 |
Operating income |  |  | 32,707 |  |  |  | 7,245 |  |  |  | 39,152 |  |  |  | 32,991 |  |  |  | 112,095 |
Net income |  |  | 25,418 |  |  |  | 4,280 |  |  |  | 28,054 |  |  |  | 24,093 |  |  |  | 81,845 |
Net income per share – diluted |  | $ | 0.80 |  |  | $ | 0.14 |  |  | $ | 0.94 |  |  | $ | 0.82 |  |  | $ | 2.70 |
|  | Quarter |  |  |  |  |
|  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | 2018 |
Net sales |  | $ | 388,633 |  |  | $ | 316,338 |  |  | $ | 414,779 |  |  | $ | 411,825 |  |  | $ | 1,531,575 |
Gross profit |  |  | 237,477 |  |  |  | 188,888 |  |  |  | 250,517 |  |  |  | 251,079 |  |  |  | 927,961 |
Operating income |  |  | 26,901 |  |  |  | 2,086 |  |  |  | 25,321 |  |  |  | 38,120 |  |  |  | 92,428 |
Net income |  |  | 20,548 |  |  |  | 3,744 |  |  |  | 18,257 |  |  |  | 26,990 |  |  |  | 69,539 |
Net income per share – diluted |  | $ | 0.52 |  |  | $ | 0.10 |  |  | $ | 0.52 |  |  | $ | 0.81 |  |  | $ | 1.92 |

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- Definition Summary of Quarterly Financial Data (unaudited) [Abstract] + 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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