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Segment Information - Summary of Unallocated Corporate Overhead (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 25, 2016 | Jun. 27, 2015 | Jun. 25, 2016 | Jun. 27, 2015
Segment Reporting Information [Line Items] |  |  |  |
Stock-based compensation | $ 12,106 | $ 10,199 | $ 22,047 | $ 19,873
Unallocated corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Stock-based compensation | 7,746 | 6,419 | 13,854 | 12,699
Compensation, benefits, and other employee-related expenses | 7,738 | 7,234 | 20,279 | 17,930
External consulting and other service expenses | 6,656 | 3,130 | 11,832 | 6,771
Information Technology | 2,364 | 1,685 | 5,496 | 3,549
Depreciation | 2,111 | 1,779 | 3,583 | 3,677
Acquisition and integration | 7,260 | 3,956 | 11,023 | 3,594
Other general unallocated corporate | 3,011 | 2,103 | 6,178 | 4,240
Total unallocated corporate expense | $ 36,886 | $ 26,306 | $ 72,245 | $ 52,460

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