Income Taxes - Income (Loss) before Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income (loss) before provision for income taxes
Domestic	$ 202,053	$ 201,885	$ 175,805
Foreign	8,293	8,754	3,666
Income before provision for income taxes	210,346	210,639	179,471
Federal
Current	69,385	56,535	0
Deferred	(22,449)	7,496	55,895
State
Current	1,737	1,866	2,176
Deferred	(1,079)	204	729
Foreign
Current	2,067	4,554	3,382
Deferred	(1,511)	33	(1,118)
Provision for income taxes	$ 48,150	$ 70,688	$ 61,064