Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014 Other_Defendants	Mar. 31, 2013	Mar. 31, 2012	Nov. 30, 2011
Contingencies And Commitments [Line Items]
Rent expense	$ 700,000	$ 500,000	$ 500,000
Product formula purchase price	2,000,000			2,000,000
Annual payment for product formula purchases	150,000
Number of years annual payment is required	6 years
Product formula purchase agreement period	7 years
Product Formula Purchase Agreement Period End Date	2018-11
Amount the plaintiff may seek per violation per day	2,500
Number of Other Companies Named As Defendants	21
Product formulas
Contingencies And Commitments [Line Items]
Remaining obligation	$ 1,700,000