Segment Information - Other Acquired Intangible Assets, Net and Goodwill Included in Segment Assets and Amortization of Acquired Intangible Assets by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jul. 04, 2014	Apr. 03, 2015
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	$ 45,231		$ 42,340
Goodwill	117,700		117,241
Amortization of acquired intangible assets	4,810	$ 4,029
Satellite Services [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	2,765	2,765
Commercial Networks [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	496	343
Government Systems [Member]
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	1,549	$ 921
Operating Segments [Member] | Satellite Services [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	15,108		17,873
Goodwill	9,805		9,809
Operating Segments [Member] | Commercial Networks [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	8,573		1,443
Goodwill	44,050		43,994
Operating Segments [Member] | Government Systems [Member]
Segment Reporting Information [Line Items]
Other acquired intangible assets, net	21,550		23,024
Goodwill	$ 63,845		$ 63,438