Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Acquisitions - Additional Information (Detail)

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Acquisitions - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
0 Months Ended 12 Months Ended
Dec. 13, 2013
Mar. 31, 2014
Mar. 31, 2012
Business Combinations [Abstract]      
Cash consideration $ 4.1 $ 4.1 $ 14.4
Assumed debt $ 2.2    
Acquisition date   Dec. 13, 2013