Share Repurchase Programs (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Aug. 31, 2014
Equity [Abstract]
Stock repurchase program, authorized amount				$ 50,000,000
Purchase of common stock, shares	0	380,538	936,049
Purchase of Treasury Stock		$ 6,284,000	$ 12,729,000