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Restructuring Costs - Additional Information (Details) ft² in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 28, 2019 USD ($) Employee | Dec. 28, 2019 USD ($) | Dec. 29, 2018 USD ($) | Dec. 30, 2017 USD ($) ft² Employee
Restructuring Plan 2019 |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) |  | $ 192 |  |
Restructuring Plan 2019 | Canada |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Number of positions eliminated related to restructuring | Employee | 6 |  |  |
Restructuring Plan 2019 | Employee severance |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) | $ 192 | $ 192 |  |
Restructuring Plan 2017 |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) |  |  | $ 1,717 | $ 203
Manufacturing facility square footage (in sqft) | ft² |  |  |  | 160
Restructuring Plan 2017 | United States |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Number of positions eliminated related to restructuring | Employee |  |  |  | 4
Restructuring Plan 2017 | Sweden |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Number of positions eliminated related to restructuring | Employee |  |  |  | 6
Restructuring Plan 2017 | Employee severance |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) |  |  | (55) | $ 203
Restructuring Plan 2017 | Facility-related closing costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected total costs |  |  |  | $ 1,920
Restructuring Plan 2017 | Relocation Of Machinery And Equipment And Administrative Offices |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) |  |  | 1,318 |
Restructuring Plan 2017 | Employee Retention, Facility Closing, And Other Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring provision (reversal) |  |  | $ 454 |

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