Segment Information - Amortization of Acquired Intangible Assets by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 04, 2013	Sep. 28, 2012	Oct. 04, 2013	Sep. 28, 2012
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	$ 3,796	$ 4,041	$ 7,297	$ 8,105
Satellite Services [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	2,765	3,238	5,530	6,476
Commercial Networks [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	509	177	652	361
Government Systems [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	$ 522	$ 626	$ 1,115	$ 1,268