Share Repurchase Program (Detail) (USD $)	1 Months Ended		12 Months Ended			1 Months Ended	12 Months Ended
	Feb. 28, 2014	May 31, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Aug. 31, 2014 Forecast	Jun. 30, 2015 Forecast
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 20,000,000	$ 25,000,000				$ 50,000,000
Treasury stock, shares			1,333,355	1,141,022	301,716		180,000
Purchase of Treasury Stock			$ 19,973,000	$ 19,978,000	$ 4,988,000		$ 2,500,000