Marketable Securities and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jul. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration	$ 1,053	$ 510
Aggregate carrying amount of other investment	$ 4,422	$ 3,654
Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investment, fair value			$ 800