Shareholders' Equity - Summary of Common Shares Outstanding (Detail)	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Increase Decrease In Stockholders Equity [Roll Forward]
Balance at the beginning of the year	33,558,864	33,433,128
Repurchases	(211,270)	(150,205)
Stock option issuances	101,350	210,449
Restricted share issuances	169,937	198,879
Restricted share forfeitures	0	0
Shares withheld for tax obligations	0	0
Balance at the end of the period	33,618,881	33,692,251