Equity Incentive Plans - Additional Information (Detail) - USD ($)		12 Months Ended
		Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash compensation expense		$ 18,564,000	$ 17,623,000	$ 17,587,000
Stock options outstanding		2,498,310	3,323,476	3,590,115	4,317,065
Total intrinsic value of stock options exercised		$ 128,000,000	$ 41,700,000	$ 68,100,000
Cash received from exercise of stock options		15,200,000	4,800,000	9,000,000
Tax benefit realized from stock options exercised		$ 46,100,000	14,700,000	23,600,000
Restricted stock granted	[1]	97,650
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash compensation expense		$ 4,900,000	3,900,000	4,400,000
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 9,400,000
Weighted average period over which the unrecognized compensation will be recognized		2 years 6 months
Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash compensation expense		$ 12,800,000	$ 12,800,000	$ 12,400,000
Unrecognized compensation cost		$ 25,700,000
Vesting period of grant (in years)		4 years	4 years	4 years
Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted		6,920	8,350	10,640
Vesting period of grant (in years)		1 year
Employees [Member] | Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted		90,730	88,250	119,670
2004 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized		15,600,000
Number of shares available for grant		2,949,836
Stock options outstanding		2,498,310
Equity Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plans options expiration period (in years)		10 years
Equity incentive plans vesting period of grant (within years)		5 years
Equity Incentive Plan from 2009 to 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plans options expiration period (in years)		10 years
Equity incentive plans vesting period of grant (within years)		3 years
Equity Incentive Plan Two Thousand Thirteen And Two Thousand Fifteen [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity incentive plans options expiration period (in years)		10 years
Equity incentive plans vesting period of grant (within years)		4 years
Restricted Stock Units (RSUs) [Member] | Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash compensation expense		$ 900,000	$ 900,000	$ 800,000
Restricted Stock Units (RSUs) [Member] | Board of Directors [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 100,000

[1] The weighted average grant date fair value for performance-based restricted shares granted was calculated based on the market price on the grant dates. Certain tranches will ultimately be valued when the performance condition is established for each tranche, which generally occurs in the fourth quarter of each fiscal year.