Subsequent Events - Additional Information (Detail) (USD $)	6 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 30, 2014 Subsequent Event [Member]
Subsequent Event [Line Items]
Declared cash dividend, per share	$ 1.20	$ 0.60	$ 0.30
Dividend payable, date to be paid			Feb. 25, 2014
Dividend payable, date of record			Feb. 10, 2014