Common Stock Repurchases - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 26, 2015	Dec. 27, 2014
Four Zero One K Plan [Member]
Shares Repurchases [Line Items]
Repurchase and cancellation of shares	28,740	61,830
Common stock repurchased, average price	$ 48.26	$ 50.71
Repurchase and cancellation of shares, value	$ 1,400,000	$ 3,100,000
Share Repurchase Program [Member]
Shares Repurchases [Line Items]
Repurchase and cancellation of shares	122,000	855,600
Common stock repurchased, average price	$ 48.77	$ 47.20
Repurchase and cancellation of shares, value	$ 5,900,000	$ 40,400,000
Share repurchase program shares authorized to be repurchased	$ 100,000,000
Share repurchase program expiration date	Dec. 31, 2015
Share repurchase program, remaining authorized amount	$ 53,700,000