Segment Information - Segment Revenues, Operating (Losses) Profits and Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 04, 2014	Jun. 28, 2013	Apr. 04, 2014
Revenues:
Product revenues	$ 168,129	$ 182,161
Service revenues	151,342	138,941
Total revenues	319,471	321,102
Operating (losses) profits:
Amortization of acquired intangible assets	(4,029)	(3,501)
(Loss) income from operations	(1,169)	3,424
Assets
Total assets	2,056,280		1,960,115
Satellite Services [Member]
Operating (losses) profits:
Amortization of acquired intangible assets	(2,765)	(2,765)
Commercial Networks [Member]
Operating (losses) profits:
Amortization of acquired intangible assets	(343)	(143)
Government Systems [Member]
Operating (losses) profits:
Amortization of acquired intangible assets	(921)	(593)
Operating Segments [Member]
Operating (losses) profits:
(Loss) income from operations	2,860	6,925
Assets
Total assets	581,070		509,685
Operating Segments [Member] | Satellite Services [Member]
Revenues:
Product revenues	30	16
Service revenues	109,685	85,831
Total revenues	109,715	85,847
Operating (losses) profits:
(Loss) income from operations	(1,949)	(12,978)
Assets
Total assets	77,543		73,382
Operating Segments [Member] | Commercial Networks [Member]
Revenues:
Product revenues	88,592	91,824
Service revenues	3,636	5,575
Total revenues	92,228	97,399
Operating (losses) profits:
(Loss) income from operations	(5,990)	3,336
Assets
Total assets	245,171		229,455
Operating Segments [Member] | Government Systems [Member]
Revenues:
Product revenues	79,507	90,321
Service revenues	38,021	47,535
Total revenues	117,528	137,856
Operating (losses) profits:
(Loss) income from operations	10,799	16,567
Assets
Total assets	258,356		206,848
Intersegment Elimination [Member]
Revenues:
Total revenues
Operating (losses) profits:
(Loss) income from operations
Corporate, Non-Segment [Member]
Operating (losses) profits:
(Loss) income from operations
Assets
Total assets	1,475,210		1,450,430
Material Reconciling Items [Member]
Operating (losses) profits:
Amortization of acquired intangible assets	$ (4,029)	$ (3,501)