Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Current:
Federal	$ 26,033	$ 29,647	$ 33,765
State	695	638	(633)
Foreign	4,001	10,741	10,953
Current income tax expense (benefit)	30,729	41,026	44,085
Deferred:
Federal	(6,782)	(5,976)	(5,492)
State	353	12	2,406
Foreign	134	261	(917)
Deferred income tax expense (benefit)	(6,295)	(5,703)	(4,003)
Income tax provision	$ 24,434	$ 35,323	$ 40,082