Stockholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	1 Months Ended
	Oct. 31, 2011	Aug. 31, 2011 August 2011 Repurchase Agreement	Jan. 20, 2012 January 2012 Repurchase Agreement	Jan. 18, 2012 January 2012 Repurchase Agreement	Jan. 20, 2012 Catterton Repurchase Agreements	Jan. 18, 2012 Catterton Repurchase Agreements
Equity, Class of Treasury Stock [Line Items]
Common stock purchased, shares		1,000,000	1,000,000		1,000,000
Common stock price per share		$ 20.00	$ 28.50		$ 28.50
Aggregate purchase price of common stock	$ 20,000	$ 20,000	$ 28,500		$ 28,500
Closing price of common stock		$ 20.62		$ 29.34		$ 29.34
Percentage of issued and outstanding common stock prior to repurchase		1.80%	1.80%		1.80%