Remaining Annual Amounts of Principal Payments of Credit Facility (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Line Of Credit Facility [Line Items]
Year 1	$ 20,000
Year 2	20,000
Year 3	220,200
Year 5	2,671
Total debt	262,871	$ 175,957
Term Loans
Line Of Credit Facility [Line Items]
Year 1	20,000
Year 2	20,000
Year 3	10,000
Total debt	50,000	65,000
Yen Line of Credit
Line Of Credit Facility [Line Items]
Year 5	2,671
Total debt	2,671	2,457
U.S. Dollar Line of Credit
Line Of Credit Facility [Line Items]
Year 3	210,200
Total debt	$ 210,200	$ 108,500