Legal Proceedings and Other Matters (Details) (Mobile Data Communications Segment [Member], USD $)	Oct. 31, 2012
Mobile Data Communications Segment [Member]
Total orders received under BFT-1 contract	$ 376,987,000
Minimum U.S. government contract value that may be subject to full Cost Accounting Standards (CAS) coverage	$ 50,000,000

Minimum U.S. government contract value that may be subject to full Cost Accounting Standards (CAS) coverage

No definition available.

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