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Operating Segments and Geographic Information - Reconciliation of Total Reportable Segments' Revenues and EBITDA to Consolidated Revenues and Consolidated Income from Continuing Operations Before Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2016 | Jun. 28, 2015 | Jul. 03, 2016 | Jun. 28, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Consolidated Revenues | $ 601,631 | $ 585,755 | $ 1,143,128 | $ 1,132,712
Amortization of intangibles | (26,263) | (25,917) | (51,795) | (52,421)
Severance, restructuring, and acquisition integration costs | (5,869) | (4,907) | (14,277) | (19,390)
Depreciation expense | (12,000) | (11,700) | (23,700) | (23,200)
Consolidated operating income | 62,241 | 44,143 | 103,205 | 49,041
Interest expense, net | (24,049) | (24,769) | (48,445) | (48,615)
Consolidated income from continuing operations before taxes | 38,192 | 19,374 | 54,760 | 426
Reportable Segment [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Consolidated Revenues | 603,381 | 598,513 | 1,147,181 | 1,167,964
Deferred revenue adjustments | (1,750) | (12,758) | (4,053) | (35,252)
Total Segment EBITDA | 108,335 | 100,300 | 198,401 | 188,597
Amortization of intangibles | (26,263) | (25,917) | (51,795) | (52,421)
Deferred gross profit adjustments | (1,750) | (13,440) | (4,053) | (35,098)
Severance, restructuring, and acquisition integration costs | (5,869) | (4,907) | (14,277) | (19,390)
Depreciation expense | (11,987) | (11,692) | (23,650) | (23,233)
Purchase accounting effects related to acquisitions |  |  | (195) | (9,422)
Income from equity method investment | 661 | 343 | 491 | 1,111
Eliminations [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Consolidated operating income | $ (886) | $ (544) | $ (1,717) | $ (1,103)

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