| Schedule of Quarterly Financial Information |
Summarized unaudited quarterly financial results for 2017 and 2016 follows: | | | | | | | | | | | | | | | | | | 2017 Quarter | | First | | Second | | Third | | Fourth | | | (in thousands, except per share amounts) | Net sales | | $ | 467,029 |
| | $ | 478,536 |
| | $ | 498,651 |
| | $ | 693,814 |
| Gross profit | | $ | 126,998 |
| | $ | 131,470 |
| | $ | 148,801 |
| | $ | 207,964 |
| Net (loss) income | | $ | (4,531 | ) | | $ | (11,802 | ) | | $ | 6,270 |
| | $ | 29,429 |
| Earnings per basic share | | $ | (0.06 | ) | | $ | (0.15 | ) | | $ | 0.08 |
| | $ | 0.38 |
| Earnings per diluted share | | $ | (0.06 | ) | | $ | (0.15 | ) | | $ | 0.08 |
| | $ | 0.37 |
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| | | | | | | | | | | | | | | | | | 2016 Quarter | | First | | Second | | Third | | Fourth | | | (in thousands, except per share amounts) | Net sales | | $ | 502,909 |
| | $ | 504,767 |
| | $ | 506,090 |
| | $ | 678,781 |
| Gross profit | | $ | 167,748 |
| | $ | 150,919 |
| | $ | 151,717 |
| | $ | 192,820 |
| Net income | | $ | 12,882 |
| | $ | 10,144 |
| | $ | 11,617 |
| | $ | 22,774 |
| Earnings per basic share | | $ | 0.16 |
| | $ | 0.13 |
| | $ | 0.15 |
| | $ | 0.29 |
| Earnings per diluted share | | $ | 0.16 |
| | $ | 0.13 |
| | $ | 0.15 |
| | $ | 0.29 |
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