Segment Information (Details Textuals) (USD $) In Millions	3 Months Ended
Jul. 01, 2011	Jul. 02, 2010	Apr. 01, 2011
Segment Information (Textuals) [Abstract]
Forward loss related to loss contracts	$ 0.3	$ 8.7
Long-lived assets located outside the United States	11.5		7.9
Government satellite communication program [Member]
Segment Information (Textuals) [Abstract]
Forward loss related to loss contracts		$ 8.5

Amount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets, located in foreign countries in total in which the entity holds assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 38
-Subparagraph b(2)

Name:	us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInForeignCountries
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant