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Acquisitions - Pro Forma Effect on Operating Results (Detail) (PPC Broadband And Miranda Technologies [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2012
PPC Broadband And Miranda Technologies [Member]
Schedule Of Condensed Consolidating Statement Of Operation [Line Items]
Revenues	$ 535,904
Income from continuing operations	$ 23,107
Diluted income per share from continuing operations	$ 0.49

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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