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Share-Based Payments - Share-based payments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Compensation expense
Total compensation expense for share-based payments	$ 1,158	$ 1,402	$ 2,248	$ 2,125
Share-based compensation expense			2,248	2,125
Performance shares
Compensation expense
Unrecognized compensation expense, other than stock option	2,500		$ 2,500
Period over which unrecognized compensation expense is expected to be recognized			2 years 6 months
Restricted Stock
Compensation expense
Unrecognized compensation expense	2,000		$ 2,000
Period over which unrecognized compensation expense is expected to be recognized			3 years
Stock Option
Compensation expense
Unrecognized compensation expense, stock option	1,100		$ 1,100
Period over which unrecognized compensation expense is expected to be recognized			1 year 9 months 18 days
Cost of Sales
Compensation expense
Total compensation expense for share-based payments	232	322	$ 439	458
Selling, General and Administrative Expenses
Compensation expense
Total compensation expense for share-based payments	$ 926	$ 1,080	$ 1,809	$ 1,667