Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Detail)

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Summary of Significant Accounting Policies (Detail)
 3 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Mar. 31, 2015
Accounts Receivable | Customer A      
Significant Accounting Policies [Line Items]      
Concentrations of credit risk, percentage 20.40%   21.10%
Accounts Receivable | Customer B      
Significant Accounting Policies [Line Items]      
Concentrations of credit risk, percentage 11.70%   4.40%
Sales | Customer A      
Significant Accounting Policies [Line Items]      
Concentrations of credit risk, percentage 26.50% 64.40%  
Sales | Customer B      
Significant Accounting Policies [Line Items]      
Concentrations of credit risk, percentage 8.20% 0.00%  
Sales | Customer C      
Significant Accounting Policies [Line Items]      
Concentrations of credit risk, percentage 11.80% 0.00%