Components of Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015
Line Of Credit Facility [Line Items]
Total debt	$ 162,493	$ 175,957
Current portion of long-term debt	(20,000)	(20,000)
Long-term debt, less current portion	142,493	155,957
Line of credit
Line Of Credit Facility [Line Items]
Total debt	100,000	108,500
Term Loans
Line Of Credit Facility [Line Items]
Total debt	60,000	65,000
Yen denominated line of credit
Line Of Credit Facility [Line Items]
Total debt	$ 2,493	$ 2,457