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Retirement Plan - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Retirement Plans [Line Items] |  |  |
Defined contribution plan maximum employee contribution as a percentage of base salary | 75.00% |  |
Expense for the Company-sponsored defined contribution plan | $ 2,147,000 | $ 2,056,000 | $ 2,074,000
First 3% of Contributions on Defined Contribution Plan |  |  |
Retirement Plans [Line Items] |  |  |
Defined contribution plan employer contribution as a percentage of base salary | 100.00% |  |
Threshold to determine company matching percentage | 3.00% |  |
Next 2% of Contributions on Defined Contribution Plan |  |  |
Retirement Plans [Line Items] |  |  |
Defined contribution plan employer contribution as a percentage of base salary | 50.00% |  |
Threshold to determine company matching percentage | 2.00% |  |

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- Definition Defined contribution plan employer contribution as a percentage of base salary. + References No definition available. + Details
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- Definition Retirement Plans [Line Items] + References No definition available. + Details
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- Definition Threshold to determine company matching percentage. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- Details
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- Details
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