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Segment Information - Summary of Unallocated Corporate Overhead (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2017 | Jun. 25, 2016 | Jul. 01, 2017 | Jun. 25, 2016
Segment Reporting Information [Line Items] |  |  |  |
Stock-based compensation | $ 11,890 | $ 12,106 | $ 21,376 | $ 22,047
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Stock-based compensation | 7,421 | 7,746 | 13,004 | 13,854
Compensation, benefits, and other employee-related expenses | 11,079 | 7,738 | 26,041 | 20,279
External consulting and other service expenses | 4,085 | 6,656 | 9,852 | 11,832
Information technology | 3,617 | 2,364 | 6,010 | 5,496
Depreciation | 2,102 | 2,111 | 4,090 | 3,583
Acquisition and integration | 1,191 | 7,260 | 1,212 | 11,023
Other general unallocated corporate | 3,505 | 3,011 | 6,291 | 6,178
Total unallocated corporate expense | $ 33,000 | $ 36,886 | $ 66,500 | $ 72,245

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