Income Taxes - Income (Loss) before Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income (loss) before provision for income taxes
Domestic	$ 195,442	$ 202,053	$ 201,885
Foreign	7,901	8,293	8,754
Income before provision for income taxes	203,343	210,346	210,639
Federal
Current	47,734	69,385	56,535
Deferred	2,468	(22,449)	7,496
State
Current	1,471	1,737	1,866
Deferred	419	(1,079)	204
Foreign
Current	2,296	2,067	4,554
Deferred	267	(1,511)	33
Provision for income taxes	$ 54,655	$ 48,150	$ 70,688