Annual report pursuant to Section 13 and 15(d)

Acquisitions Acquisitions (Details) (Parenthetical)

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Acquisitions Acquisitions (Details) (Parenthetical) (Customer Relationships [Member], Antone Wireless Corporation [Member])
12 Months Ended
Mar. 31, 2014
Customer Relationships [Member] | Antone Wireless Corporation [Member]
 
Business Acquisition [Line Items]  
Finite-Lived Intangible Asset, Useful Life 8 years