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v3.21.1

Adoption of New Accounting Standards and Recently Issued Accounting Standards - Additional Information (Detail) - USD ($) $ in Thousands | 4 Months Ended |  |
--- | --- | --- | ---
Apr. 24, 2021 | Apr. 18, 2020 | Jan. 02, 2021 | Dec. 29, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Change in accounting principle, accounting standards update, adoption date | Dec. 29, 2019 |  |  |
Change in accounting principle, accounting standards update, adopted [true false] | true |  |  |
Change in accounting principle, accounting standards update, immaterial effect [true false] | false |  |  |
Accounting Standards Update [Extensible List] | Accounting Standards Update 2016-13 [Member] |  |  |
Retained earnings | $ 257,784 |  | $ 245,506 |
Accounting Standards Update 2016-13 [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Retained earnings |  |  |  | $ 2,200
Deferred income tax | 600 |  |  |
Accounting Standards Update 2016-13 [Member] | Current Accounts and Notes Receivable [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Transition adjustment due to adoption of new credit loss standard | 1,900 | $ 1,911 |  |
Accounting Standards Update 2016-13 [Member] | Long Term Notes Receivable [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Transition adjustment due to adoption of new credit loss standard | $ 300 | $ 259 |  |

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Data Type: | na
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