Quarterly report pursuant to Section 13 or 15(d)

Segment and Geographic Information (Detail)

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Segment and Geographic Information (Detail) - Segment
3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Segment Reporting Information [Line Items]        
Number of operating segments     4  
Number of reportable segments     2  
Sales | Customer A        
Segment Reporting Information [Line Items]        
Concentrations of credit risk, percentage 29.20% 52.60% 29.40% 58.50%