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Segmental Information - Geographic Information by Region (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2023	Mar. 27, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 101.3	$ 97.0
Top five countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 75.0	$ 71.0
Top five countries | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	74.10%	73.20%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 57.7	$ 55.3
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	57.00%	57.00%
U.K.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 5.6	$ 5.4
U.K. | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	5.50%	5.60%
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 6.3	$ 4.5
Germany | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	6.20%	4.60%
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 2.1	$ 3.5
France | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	2.10%	3.60%
Italy
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 3.3	$ 2.3
Italy | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	3.30%	2.40%
Rest of Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 7.4	$ 6.0
Rest of Europe | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	7.30%	6.20%
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 14.8	$ 14.6
Asia Pacific | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	14.60%	15.10%
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 4.1	$ 5.4
Other | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	4.00%	5.60%

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