Capital Stock - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding shares owned by controlling family	24.00%
Shares authorized of undesignated capital stock for future issuance	50,000,000
Authorized number of common stock shares for grant	2,000,000
Date of plan approval	May 20, 2009
Maximum grant period from date of plan approval	10 years
Shares available for grant under the plan	1,710,844
Compensation cost related to restricted stock	$ 900,000	$ 1,100,000	$ 800,000
Cash received from option exercises under the plan	93,000	463,000	551,000
Total 401(K) expense	$ 2,500,000	$ 2,500,000	$ 1,900,000
Common stock, shares held by 401(K) plan	327,708
Repurchase and cancellation of shares	33,430	61,830	78,580
Common stock repurchased, average price	$ 48.14	$ 50.71	$ 44.39
Common stock repurchased, value	$ 1,600,000	$ 3,100,000	$ 3,500,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost related to stock options	$ 100,000	$ 100,000	$ 100,000
Share Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased, average price	$ 47.77	$ 47.20
Common stock repurchased, value	$ 35,700,000	$ 40,400,000
Share repurchase program shares authorized to be repurchased	$ 150,000,000	$ 10,000,000
Shares repurchased under share repurchase program	747,700	855,600	0
Authorized date of repurchase of outstanding common stock		Dec. 12, 2013
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized compensation cost	$ 0	$ 0	$ 0
Unrecognized compensation cost related to non-vested stock options	$ 1,000,000
Unrecognized compensation cost related to nonvested stock options, weighted-average period	2 years 10 months 24 days
Tax benefit generated from compensation cost and credited to additional paid in capital	$ 300,000	500,000	300,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized compensation cost	0	0	0
Unrecognized compensation cost related to non-vested stock options	0
Tax benefit generated from compensation cost and credited to additional paid in capital	$ 100,000	$ 300,000	$ 800,000
Stock options granted	0	0	0
Percentage of forfeiture assumption in calculation of compensation cost	5.40%	5.40%	5.40%
Intrinsic value of stock options exercised	$ 1,400,000