Components of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Line Of Credit Facility [Line Items]
Total debt	$ 175,957	$ 241,960
Current portion of long-term debt	(20,000)	(20,000)
Long-term debt, less current portion	155,957	221,960
Line of credit
Line Of Credit Facility [Line Items]
Total debt	108,500	154,000
Term Loans
Line Of Credit Facility [Line Items]
Total debt	65,000	85,000
Yen denominated line of credit
Line Of Credit Facility [Line Items]
Total debt	$ 2,457	$ 2,960