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 9 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Mar. 31, 2015
Accounts Receivable | Customer A          
Significant Accounting Policies [Line Items]          
Concentrations of credit risk, percentage     14.20%   21.10%
Accounts Receivable | Customer B          
Significant Accounting Policies [Line Items]          
Concentrations of credit risk, percentage     8.20%   4.40%
Sales | Customer A          
Significant Accounting Policies [Line Items]          
Concentrations of credit risk, percentage 22.00% 44.70% 26.60% 53.10%  
Sales | Customer B          
Significant Accounting Policies [Line Items]          
Concentrations of credit risk, percentage 11.30% 0.00% 10.20% 0.00%