Share Repurchase Program (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Aug. 31, 2014	Feb. 28, 2014	May. 31, 2012
Equity [Abstract]
Stock repurchase program, authorized amount					$ 50,000,000	$ 20,000,000	$ 25,000,000
Purchase of common stock, shares	936,049	1,333,355	1,141,022	301,716
Purchase of Treasury Stock	$ 12,729,000	$ 19,973,000	$ 19,978,000	$ 5,000,000