Goodwill and Acquired Intangible Assets - Allocation of Other Acquired Intangible Assets and Related Accumulated Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Apr. 03, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets, gross	$ 197,604	$ 190,221
Other acquired intangible assets, accumulated amortization	(164,000)	(147,881)
Other acquired intangible assets, net	$ 33,604	42,340
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	6 years
Other acquired intangible assets, gross	$ 74,848	67,403
Other acquired intangible assets, accumulated amortization	(59,921)	(55,939)
Other acquired intangible assets, net	$ 14,927	11,464
Contracts and customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	8 years
Other acquired intangible assets, gross	$ 99,499	99,556
Other acquired intangible assets, accumulated amortization	(83,928)	(74,019)
Other acquired intangible assets, net	$ 15,571	25,537
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	(5,818)	(4,893)
Other acquired intangible assets, net	$ 2,782	3,707
Trade name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	3 years
Other acquired intangible assets, gross	$ 5,940	5,940
Other acquired intangible assets, accumulated amortization	(5,918)	(5,788)
Other acquired intangible assets, net	$ 22	152
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	7 years
Other acquired intangible assets, gross	$ 8,717	8,722
Other acquired intangible assets, accumulated amortization	(8,415)	(7,242)
Other acquired intangible assets, net	$ 302	$ 1,480