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Estimated Future Amortization Expense (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Mar. 31, 2014
Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]      
2015 $ 1,377    
2016 1,377    
2017 1,366    
2018 1,086    
2019 460    
Future 1,592    
Net $ 7,258 $ 9,074 $ 4,757