| Quarterly Financial Data (Unaudited) |
Quarterly Financial Data (Unaudited) Summarized unaudited quarterly financial results for 2015 and 2014 follows: | | | | | | | | | | | | | | | | | | 2015 Quarter | | First | | Second | | Third | | Fourth | | | (in thousands, except per share amounts) | Net sales | | $ | 502,378 |
| | $ | 535,582 |
| | $ | 546,616 |
| | $ | 765,553 |
| Gross profit | | $ | 166,444 |
| | $ | 177,190 |
| | $ | 191,089 |
| | $ | 260,554 |
| Net income | | $ | 13,062 |
| | $ | 21,028 |
| | $ | 26,307 |
| | $ | 56,116 |
| Earnings per basic share | | $ | 0.15 |
| | $ | 0.25 |
| | $ | 0.31 |
| | $ | 0.68 |
| Earnings per diluted share | | $ | 0.15 |
| | $ | 0.25 |
| | $ | 0.31 |
| | $ | 0.67 |
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| | | | | | | | | | | | | | | | | | 2014 Quarter | | First | | Second | | Third | | Fourth | | | (in thousands, except per share amounts) | Net sales | | $ | 460,652 |
| | $ | 481,420 |
| | $ | 497,608 |
| | $ | 725,801 |
| Gross profit | | $ | 137,373 |
| | $ | 136,025 |
| | $ | 157,558 |
| | $ | 229,998 |
| Net income | | $ | 5,083 |
| | $ | 6,867 |
| | $ | 14,585 |
| | $ | 41,790 |
| Earnings per basic share | | $ | 0.06 |
| | $ | 0.08 |
| | $ | 0.17 |
| | $ | 0.50 |
| Earnings per diluted share | | $ | 0.06 |
| | $ | 0.08 |
| | $ | 0.17 |
| | $ | 0.49 |
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