Related Party Transactions - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	6 Months Ended	0 Months Ended
	Dec. 23, 2011	Dec. 31, 2011 Former Executive Officers [Member]	Dec. 23, 2011 Former Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Stock repurchased from former executives and retired during period shares		481,205
Aggregate Price of stock repurchased from former executives and retired during the period		$ 0.8
Shares repurchased from former CEO and retired during the period			7,049,515
Aggregate Price of stock repurchased from former CEO and retired during the period			$ 10.2
Stock repurchased from former executives and retired during period per share	$ 1.45