Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 30, 2012	Apr. 01, 2011	Apr. 02, 2010
Amortization of acquired intangibles by segment
Amortization of acquired intangible assets	$ 18,732	$ 19,409	$ 9,494
Satellite Services [Member]
Amortization of acquired intangibles by segment
Amortization of acquired intangible assets	12,951	12,951	3,779
Commercial Networks [Member]
Amortization of acquired intangibles by segment
Amortization of acquired intangible assets	3,224	4,001	4,629
Government Systems [Member]
Amortization of acquired intangibles by segment
Amortization of acquired intangible assets	$ 2,557	$ 2,457	$ 1,086

Aggregate amount of intangible asset amortization recognized as expense during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration