Earnings Per Share - Additional Information (Detail) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Initial conversion price of the Convertible Senior Notes, per share	$ 104
Debt conversion description	Upon conversion, a holder of the Convertible Senior Notes would have received an amount in cash per $1,000 principal amount of Convertible Senior Notes equal to the lesser of $1,000 or the conversion value of the Convertible Senior Notes, determined in the manner set forth in the Indenture. If the conversion value exceeded $1,000, we would have delivered $1,000 in cash and, at our option, cash or common stock or a combination of cash and common stock for the conversion price in excess of $1,000
Amount of Convertible Senior Notes	$ 1,000
Options to Purchase Common Stock [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Common stock outstanding excluded from the computation of diluted earnings per share	314,635	1,258,680	1,685,144
Restricted Shares and Restricted Stock Units [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Common stock outstanding excluded from the computation of diluted earnings per share	0	0	3,000
Convertible Senior Notes [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Amount of Convertible Senior Notes	$ 1,000