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Segment Information - Summary of Unallocated Corporate Overhead (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 27, 2015
Jun. 28, 2014
Segment Reporting Information [Line Items]        
Stock-based compensation expense $ 10,199 $ 8,222 $ 19,873 $ 14,881
Depreciation expense 17,400 17,400 34,500 33,200
Unallocated corporate        
Segment Reporting Information [Line Items]        
Stock-based compensation expense 6,419 4,905 12,699 8,607
Salary, bonus and fringe 7,234 7,438 17,930 17,705
Consulting, audit and professional services 3,130 2,437 6,771 5,668
IT related expenses 1,685 1,323 3,549 2,900
Depreciation expense 1,779 1,874 3,677 3,713
Acquisition related adjustments 3,956 1,371 3,594 4,676
Other general unallocated corporate expenses 2,103 2,114 4,240 4,060
Total unallocated corporate overhead costs $ 26,306 $ 21,462 $ 52,460 $ 47,329