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Segmental Information - Geographic Information by Region (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Sep. 28, 2025
Sep. 29, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 92.9 $ 99.4 $ 293.9 $ 288.5
Top five countries        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 80.9 $ 79.4 $ 246.3 $ 228.6
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 87.10% 79.80% 83.80% 79.20%
United States        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 63.4 $ 57.7 $ 189.2 $ 168.2
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 68.30% 58.10% 64.40% 58.30%
United Kingdom        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 6.0 $ 7.4 $ 18.0 $ 18.0
United Kingdom | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 6.50% 7.40% 6.10% 6.20%
Japan        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 4.3 $ 5.7 $ 14.9 $ 14.7
Japan | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 4.60% 5.70% 5.10% 5.10%
Germany        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 5.8 $ 5.8 $ 17.0 $ 18.4
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% 5.80% 5.80% 6.40%
Canada        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 1.4 $ 2.8 $ 7.2 $ 9.3
Canada | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 1.50% 2.80% 2.40% 3.20%
Rest of Europe        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 7.0 $ 12.1 $ 26.6 $ 36.5
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 7.50% 12.30% 9.10% 12.70%
Asia Pacific        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 4.1 $ 5.8 $ 16.3 $ 16.1
Asia Pacific | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 4.40% 5.80% 5.50% 5.60%
Other        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales $ 0.9 $ 2.1 $ 4.7 $ 7.3
Other | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk, percentage 1.00% 2.10% 1.60% 2.50%