| Schedule of Quarterly Financial Information [Table Text Block] |
The following tables contain selected quarterly consolidated financial data for fiscal 2016 and 2015 that have been prepared on the same basis as the accompanying audited consolidated financial statements and include all adjustments necessary for a fair presentation, in all material respects, of the information set forth therein on a consistent basis: | | | | | | | | | | | | | | | | | | Fiscal 2016 Quarters Ended(1) (2) | | April 30, 2016 | | July 30, 2016 | | October 29, 2016 | | January 28, 2017 | | (in thousands, except per share data) | Net sales | $ | 681,267 |
| | $ | 658,944 |
| | $ | 696,616 |
| | $ | 674,617 |
| Gross profit | $ | 204,357 |
| | $ | 186,861 |
| | $ | 211,780 |
| | $ | 168,835 |
| Operating profit | $ | 48,716 |
| | $ | 39,607 |
| | $ | 62,899 |
| | $ | 48,946 |
| Net income | $ | 30,014 |
| | $ | 25,032 |
| | $ | 38,963 |
| | $ | 30,526 |
| Diluted earnings per share(3) | $ | 0.36 |
| | $ | 0.30 |
| | $ | 0.47 |
| | $ | 0.38 |
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| | | | | | | | | | | | | | | | | | Fiscal 2015 Quarters Ended | | May 2, 2015 | | August 1, 2015 | | October 31, 2015 | | January 30, 2016 | | (in thousands, except per share data) | Net sales | $ | 655,486 |
| | $ | 627,206 |
| | $ | 665,520 |
| | $ | 672,036 |
| Gross profit | $ | 213,058 |
| | $ | 191,302 |
| | $ | 198,966 |
| | $ | 165,043 |
| Operating profit | $ | 73,572 |
| | $ | 59,581 |
| | $ | 63,329 |
| | $ | 17,069 |
| Net income | $ | 47,366 |
| | $ | 37,610 |
| | $ | 39,295 |
| | $ | 11,763 |
| Diluted earnings per share(3) | $ | 0.53 |
| | $ | 0.42 |
| | $ | 0.44 |
| | $ | 0.14 |
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| Restructuring and Related Costs [Table Text Block] |
The following presents the acquisition-related items and the restructuring expenses: | | | | | | | | | | | | | | | | | | Fiscal 2016 Quarters Ended | | April 30, 2016 | | July 30, 2016 | | October 29, 2016 | | January 28, 2017 | | (in thousands) | Acquisition related: | | | | | | | | Inventory step-up costs | $ | 160 |
| | $ | 532 |
| | $ | 532 |
| | $ | 533 |
| Transaction costs (adjustments) | $ | 2,157 |
| | $ | 127 |
| | $ | 4 |
| | $ | (29 | ) | Amortization of intangible assets | $ | 732 |
| | $ | 1,098 |
| | $ | 1,072 |
| | $ | 832 |
| Change in fair value of contingent consideration liability | $ | 1,445 |
| | $ | 2,167 |
| | $ | 1,469 |
| | $ | (25,232 | ) | Restructuring expenses | $ | — |
| | $ | 2,727 |
| | $ | 1,349 |
| | $ | 467 |
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