Quarterly report pursuant to sections 13 or 15(d)

Segment Geographic Information on Sales and Net Property and Equipment (Detail)

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Segment Geographic Information on Sales and Net Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Mar. 31, 2013
Revenue, Major Customer [Line Items]      
Revenue from External Customers $ 12,088 $ 2,203  
Property and equipment, net 427   148
North America
     
Revenue, Major Customer [Line Items]      
Revenue from External Customers 57 17  
Property and equipment, net 86   77
Europe Middle East Africa
     
Revenue, Major Customer [Line Items]      
Revenue from External Customers 2,764 1,682  
Property and equipment, net 73   71
Asia Pacific
     
Revenue, Major Customer [Line Items]      
Revenue from External Customers 9,267 504  
Property and equipment, net $ 268   $ 0