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In-Process Research and Development Activity (Detail) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Dec. 31, 2014
Jul. 31, 2014
Indefinite-lived Intangible Assets [Line Items]    
Beginning balance $ 0us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill $ 18,500us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Additions 18,500us-gaap_IndefinitelivedIntangibleAssetsAcquired  
Foreign currency translation impact (2,020)us-gaap_IndefiniteLivedIntangibleAssetsTranslationAdjustments  
Ending balance $ 16,480us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill $ 18,500us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill