Components of Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Line Of Credit Facility [Line Items]
Total debt	$ 279,683	$ 235,917
Current portion of long-term debt	(20,000)	(20,000)
Unamortized debt issuance costs	(1,582)	(610)
Long-term debt, less current portion	258,101	215,307
Line of credit
Line Of Credit Facility [Line Items]
Total debt	187,000	188,000
Term Loans
Line Of Credit Facility [Line Items]
Total debt	90,000	45,000
Yen denominated line of credit
Line Of Credit Facility [Line Items]
Total debt	$ 2,683	$ 2,917