Segment, Geographic Location and Customer Information - Additional Information (Detail)	9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Revenues From External Customers And Long Lived Assets [Line Items]
Number of reportable segments	1
Customers accounted for more than ten percent of accounts receivables	3	3
Net Accounts Receivable | Customer 1
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of accounts receivable from major customers	27.00%	23.00%
Net Accounts Receivable | Customer 2
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of accounts receivable from major customers	20.00%	19.00%
Net Accounts Receivable | Customer 3
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of accounts receivable from major customers	14.00%	18.00%