Segment, Geographic Location and Customer Information - Net Sales of 10% or More of Total Revenues Derived from Customers (Detail) (Customer Concentration Risk)	3 Months Ended			9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2013	Dec. 31, 2012
Customer A
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	39.00%	43.00%		32.00%	25.00%
Customer B
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	14.00%	18.00%		16.00%	21.00%
Customer C
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales made to customers	12.00%		[1]	16.00%	13.00%

[1] Represents less than 10% of net sales.