Common Stock Repurchases - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 27, 2014	Dec. 28, 2013
Shares Repurchases [Line Items]
Repurchase and cancellation of shares	38,100	78,580
Common stock repurchased, average price	$ 54.02	$ 44.39
Repurchase and cancellation of shares, value	$ 2.1
Share Repurchase Program [Member]
Shares Repurchases [Line Items]
Repurchase and cancellation of shares	833,100
Common stock repurchased, average price	$ 47.15
Repurchase and cancellation of shares, value	39.3
Share repurchase program shares authorized to be repurchased	50
Share repurchase program, remaining authorized amount	$ 10.7