Goodwill and Acquired Intangible Assets - Allocation of Other Acquired Intangible Assets and Related Accumulated Amortization (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets, gross	$ 162,932	$ 163,585
Other acquired intangible assets, accumulated amortization	(115,762)	(100,544)
Other acquired intangible assets, net	47,170	63,041
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	6 years
Other acquired intangible assets, gross	53,714	54,240
Other acquired intangible assets, accumulated amortization	(49,654)	(47,959)
Other acquired intangible assets, net	4,060	6,281
Contracts and customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	7 years
Other acquired intangible assets, gross	88,651	88,758
Other acquired intangible assets, accumulated amortization	(51,184)	(39,966)
Other acquired intangible assets, net	37,467	48,792
Satellite co-location rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	9 years
Other acquired intangible assets, gross	8,600	8,600
Other acquired intangible assets, accumulated amortization	(3,044)	(2,119)
Other acquired intangible assets, net	5,556	6,481
Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	3 years
Other acquired intangible assets, gross	5,680	5,680
Other acquired intangible assets, accumulated amortization	(5,680)	(4,339)
Other acquired intangible assets, net		1,341
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	9 years
Other acquired intangible assets, gross	6,287	6,307
Other acquired intangible assets, accumulated amortization	(6,200)	(6,161)
Other acquired intangible assets, net	$ 87	$ 146