Schedule of Reconciliation of Income Tax Expense at Statutory Federal Rate to Reported Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Taxes at statutory rate, amount									$ 31,484	$ 27,689	$ 15,974
State income taxes-net of federal benefit, amount									864	(196)	254
Taxes on non U.S. earnings, amount									(13,860)	(11,687)	(6,672)
Valuation allowance, amount									8,464	678	(595)
Research and manufacturing incentive deductions, amount									(3,074)	(2,573)	(2,190)
Other, amount									591	(774)	554
Total Income Tax Expense	$ 13,934	$ 2,426	$ 3,187	$ 4,922	$ 5,464	$ 773	$ 2,692	$ 4,208	$ 24,469	$ 13,137	$ 7,325
Taxes at statutory rate									35.00%	35.00%	35.00%
State income taxes-net of federal benefit, rate									1.00%		1.00%
Taxes on non U.S. earnings, rate									(15.00%)	(15.00%)	(15.00%)
Valuation allowance, rate									9.00%	1.00%	(1.00%)
Research and manufacturing incentive deductions, rate									(3.00%)	(3.00%)	(5.00%)
Other, rate										(1.00%)	1.00%
Total Effective Income Tax, rate									27.00%	17.00%	16.00%