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SEGMENT INFORMATION - Summary of Unallocated Corporate Overhead (Details) - Unallocated corporate - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 25, 2022 | Jun. 26, 2021 | Jun. 25, 2022 | Jun. 26, 2021
Segment Reporting Information [Line Items] |  |  |  |
Stock-based compensation | $ 8,531 | $ 10,417 | $ 17,034 | $ 18,059
Compensation, benefits, and other employee-related expenses | 20,507 | 25,924 | 49,143 | 53,286
External consulting and other service expenses | 4,727 | 6,301 | 9,046 | 13,657
Information technology | 3,079 | 4,117 | 5,553 | 8,212
Depreciation | 567 | 721 | 1,126 | 1,373
Acquisition and integration | 3,014 | 15,036 | 8,840 | 25,596
Other general unallocated corporate | 2,986 | 3,745 | 3,127 | 7,696
Total unallocated corporate expense | $ 43,411 | $ 66,261 | $ 93,869 | $ 127,879

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