Derivative Transactions - Additional Information (Detail) - (Gain) Loss On Derivative Instruments And Other (Income) Expense, Net [Member] - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Derivatives, Fair Value [Line Items]
Other non-operating income	$ 1,900,000
Maximum [Member]
Derivatives, Fair Value [Line Items]
Other non-operating expense		$ 100,000