Derivative Financial Instruments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Derivative [Line Items]
Foreign currency forward contracts, unrealized gain (loss)	$ (30)	$ 10
Foreign Exchange Forward [Member]
Derivative [Line Items]
Notional amount of derivative contracts	1,714	927
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Realized gain (loss) from foreign currency forward contracts	$ (1)	$ 7