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Share-Based Payments - Share-based payments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 01, 2022
Oct. 02, 2021
Compensation expense        
Total compensation expense for share-based payments $ 736 $ 1,103 $ 2,984 $ 3,228
Performance shares        
Compensation expense        
Unrecognized compensation expense, other than stock option 300   $ 300  
Period over which unrecognized compensation expense is expected to be recognized     3 months  
Restricted Stock        
Compensation expense        
Unrecognized compensation expense, other than stock option 2,000   $ 2,000  
Period over which unrecognized compensation expense is expected to be recognized     2 years 8 months 12 days  
Stock Option        
Compensation expense        
Unrecognized compensation expense, stock option 1,000   $ 1,000  
Period over which unrecognized compensation expense is expected to be recognized     1 year 7 months 6 days  
Cost of Sales        
Compensation expense        
Total compensation expense for share-based payments 95 180 $ 534 638
Selling, General and Administrative Expenses        
Compensation expense        
Total compensation expense for share-based payments $ 641 $ 923 $ 2,450 $ 2,590