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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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Manufacturing Facility, Number Of Square Feet

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Amount of expected cost remaining for the specified restructuring cost.

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The number of positions eliminated during the period as a result of restructuring activities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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