Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2011	Apr. 01, 2011
Other net acquired intangible assets and goodwill included in segment assets
Other acquired intangible assets, net	$ 67,226	$ 81,889
Goodwill	83,151	83,532
Government Systems [Member]
Other net acquired intangible assets and goodwill included in segment assets
Other acquired intangible assets, net	8,845	11,157
Goodwill	29,680	30,023
Commercial Networks [Member]
Other net acquired intangible assets and goodwill included in segment assets
Other acquired intangible assets, net	2,754	5,391
Goodwill	43,662	43,700
Satellite Services [Member]
Other net acquired intangible assets and goodwill included in segment assets
Other acquired intangible assets, net	55,627	65,341
Goodwill	$ 9,809	$ 9,809