Stockholders' Equity - Roll Forward of Class A Common Shares Outstanding (Detail)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Equity [Abstract]
Balance at the beginning of the year	50,349,546	50,908,267
Repurchases	0	(87,254)
Stock option and ESPP issuances	125,592	199,715
Restricted share issuances	1,295	3,698
Restricted share forfeitures	(1,632)	(708)
Shares withheld for tax obligations	(2,236)	(5,851)
Balance at the end of the period	50,472,565	51,017,867