Segment Information - Other Net Acquired Intangible Assets and Goodwill Included in Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Mar. 30, 2012
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	$ 47,170	$ 63,041
Goodwill	83,000	83,461
Satellite Services [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	39,989	52,390
Goodwill	9,809	9,809
Commercial Networks [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	1,520	2,186
Goodwill	43,648	43,739
Government Systems [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	5,661	8,465
Goodwill	$ 29,543	$ 29,913