Segment, Geographic Location and Customer Information - Net Sales of 10% or More of Total Revenues Derived from Customers (Detail) (Net Sales)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	10.00%	10.00%	10.00%	10.00%
Customer A
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	17.00%	21.00%	12.00%	28.00%
Customer B
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	17.00%	18.00%	18.00%	18.00%
Customer C
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	14.00%	23.00%	11.00%	18.00%
Customer D
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	11.00%		20.00%
Customer E
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers		10.00%