Schedule of Changes in Liability for Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Balance at Beginning of Year	$ 5,559	$ 4,022	$ 2,775
Increases in current year tax positions	895	2,146	2,450
Increases in prior year tax positions	2,605	190	203
Decreases in prior year tax positions		(67)
Settlements	(1,143)
Expiration of statute of limitations	(339)	(732)	(1,406)
Balance at End of Year	$ 7,577	$ 5,559	$ 4,022