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Employee Benefits - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Jan. 03, 2016 | Dec. 28, 2014 | Dec. 29, 2013
Nonqualified Deferred Compensation Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of defer on compensation | 40.00% |  |
401(K) [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plans, general information | The Company has a retirement savings plan which qualifies under Internal Revenue Code Section 401(k). All employees of the Company who have completed 1,000 hours of service and are at least 21 years of age are eligible to participate in the plan. |  |
Service period of employees to be eligible for participation under the retirement savings plan (in hours) | 1000 hours |  |
Plan requires to match elective deferrals, higher | 100.00% |  |
Employee's elective deferrals higher percentage | 3.00% |  |
Plan requires to match elective deferrals, lower | 50.00% |  |
Employee's elective deferrals lower percentage | 2.00% |  |
Contributions to the plan, value | $ 4.6 | $ 4.1 | $ 3.9
Employee Stock Purchase Discount Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contributions to the plan, value | $ 0.4 | $ 0.3 | $ 0.2
Percentage of wages deduction from eligible employees | 15.00% |  |
Percentage of face value on stock purchase | 85.00% |  |
Shares purchased on the open market | 23,994 | 25,224 | 27,404
Weighted-average price of shares purchased on the open market | $ 105.16 | $ 74.89 | $ 55.24

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- Definition General information regarding defined benefit plans. A defined benefit pension plan is a plan that defines an amount of pension benefit to be provided, usually as a function of one or more factors such as age, years of service, or compensation. An other postretirement defined benefit plan is an arrangement that is mutually understood by an employer and its employees, whereby an employer undertakes to provide its employees with benefits other than pensions, after they retire in exchange for their services over a specified period of time, upon attaining a specified age while in service, or a combination of both. Any plan that is not a defined contribution plan is a defined benefit plan. General descriptive information about the employer's defined benefit plans, including employee groups covered, type of benefit formula, type of benefits, cost sharing arrangements, funding policy, types of assets held, and significant nonbenefit liabilities, if any. Also includes information pertaining to multiple employer plans, which are accounted for as single-employer plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Defined Benefit Plan -URI http://asc.fasb.org/extlink&oid=49172387 + Details
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