Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2012	Jul. 01, 2011	Mar. 30, 2012
Revenues
Product revenues	$ 147,729	$ 122,546
Service revenues	94,034	72,555
Total revenues	241,763	195,101
Operating (losses) profits
Amortization of acquired intangible assets	(4,064)	(4,772)
(Loss) income from operations	(13,789)	1,301
Assets
Total assets	1,721,617		1,727,153
Satellite Services [Member]
Revenues
Product revenues	531	651
Service revenues	58,788	56,212
Total revenues	59,319	56,863
Operating (losses) profits
Amortization of acquired intangible assets	(3,238)	(3,238)
(Loss) income from operations	(22,516)	1,933
Assets
Total assets	97,386		95,671
Commercial Networks [Member]
Revenues
Product revenues	70,762	47,296
Service revenues	5,373	4,773
Total revenues	76,135	52,069
Operating (losses) profits
Amortization of acquired intangible assets	(184)	(883)
(Loss) income from operations	(2,069)	(3,240)
Assets
Total assets	182,421		170,553
Government Systems [Member]
Revenues
Product revenues	76,436	74,599
Service revenues	29,873	11,570
Total revenues	106,309	86,169
Operating (losses) profits
Amortization of acquired intangible assets	(642)	(651)
(Loss) income from operations	14,860	7,380
Assets
Total assets	221,339		219,199
Unallocated Amount to Segment [Member]
Operating (losses) profits
(Loss) income from operations
Assets
Total assets	1,220,471		1,241,730
Operating Segments [Member]
Operating (losses) profits
(Loss) income from operations	(9,725)	6,073
Assets
Total assets	501,146		485,423
Intersegment Elimination [Member]
Revenues
Total revenues
Operating (losses) profits
(Loss) income from operations