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Share Plans (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 6 Months Ended 11 Months Ended 12 Months Ended
Dec. 29, 2023
Dec. 30, 2022
Jun. 16, 2022
Nov. 14, 2023
Dec. 29, 2023
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation cost $ 0.0 $ 1.4 $ 1.7 $ 8.9   $ 10.2
Tax benefit from share-based compensation cost $ 0.0 $ 0.0 $ 0.0 0.0   $ 0.0
Shares authorized under 2013 Plan     1,800,000      
Share-based Compensation Arrangements by Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair value       $ 2.5    
Share Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award Vesting Period         4 years  
Expiration period         10 years  
Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Performance Shares Award, Performance Period         3 years  
Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted-average grant date fair value, granted restricted share units   $ 8.34   $ 10.13    
Performance Shares | Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted-average grant date fair value, granted restricted share units       $ 10.13    
Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of ordinary shares to be awarded         0.00%  
Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of ordinary shares to be awarded         200.00%