Stockholders' Equity - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended
	Jan. 28, 2013	Jun. 28, 2013	Jun. 28, 2013	May 24, 2013 Dutch auction [Member]	Feb. 19, 2013 Common Stock [Member]	Jan. 28, 2013 Common Stock [Member]
Stock Repurchase Program [Line Items]
Authorized stock repurchase value	$ 25
Increase in stock repurchase program					35	75
Common stock repurchased and retired, shares		1.8	3.4
Common stock repurchased and retired, aggregate value		10.7	19.9
Tender offer to repurchased and retired of common stock, shares				12.0
Sale of common stock price per share				$ 6.25
Tender offer to repurchase of common stock, cost				76
Fees and expenses on repurchase of common stock				$ 1.0