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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 28, 2021 | Mar. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Recognized stock-based compensation expense | $ 193 | $ 490
Common Share Options [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Recognized stock-based compensation expense | 100 | 200
Unrecognized stock compensation expense | $ 100 |
Unrecognized stock compensation expense, recognition period | 2022 |
Performance Stock Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Grants vesting period | 5 years |
Performance Stock Units [Member] | Market Vesting Conditions [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Recognized stock-based compensation expense | $ 100 |
Employee and Non Employee Directors [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Grants vesting period | 4 years |
Method used to determine fair value of the options | Black-Scholes option pricing model |
Stock options granted | 0 |
Non-Employee Board Of Directors [Member] | Restricted Stock Units (RSUs) [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Grants vesting period | 3 years |
Recognized stock-based compensation expense | $ 100 | $ 300
Unrecognized stock compensation expense | $ 1,900 |
Unrecognized stock compensation expense, recognition period | 2023 |
Vesting description | The employee grants vest in one-third increments over a three-year period. |
Non-Employee Board Of Directors [Member] | Restricted Stock Units (RSUs) [Member] | First Anniversary [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting percentage | 50.00% |
Non-Employee Board Of Directors [Member] | Restricted Stock Units (RSUs) [Member] | Second Anniversary [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting percentage | 50.00% |

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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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