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Employee Benefit Plan - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016 | Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Contribution Plan Employee Contribution Percentage | 15.00% |  |  |
Employee contributions to plan in percentage |  |  |  | 50.00%
Total matching contributions made by the company | $ 248 | $ 226 | $ 218 |
Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Employee contributions to plan |  |  |  | $ 3

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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