Segment Information - Amortization of Acquired Intangibles by Segment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Apr. 01, 2011
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	$ 15,584	$ 18,732	$ 19,409
Satellite Services [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	12,401	12,951	12,951
Commercial Networks [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	666	3,224	4,001
Government Systems [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	$ 2,517	$ 2,557	$ 2,457