Derivative Instruments - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2015 JPY (¥)	Jun. 30, 2014 USD ($)
Minimum
Derivative [Line Items]
Foreign currency forward exchange contracts, expiration date	Jul. 31, 2015
Maximum
Derivative [Line Items]
Foreign currency forward exchange contracts, expiration date	Oct. 31, 2015
Foreign Currency Forward Exchange Contracts
Derivative [Line Items]
Foreign currency forward exchange contracts, notional amount | $	$ 10,800,000		$ 7,400,000
Foreign Currency Forward Exchange Contracts | Minimum
Derivative [Line Items]
Foreign currency forward exchange contracts, notional amount		¥ 250,000,000
Foreign Currency Forward Exchange Contracts | Maximum
Derivative [Line Items]
Foreign currency forward exchange contracts, notional amount		¥ 350,000,000