Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Deferred tax assets:
Inventories	$ 19,162	$ 16,829
Other postretirement benefits and accrued items	10,174	7,260
Other reserves	6,956	8,046
Foreign tax attributes	4,862	5,750
State tax attributes, net of federal benefit	6,728	8,063
Stock-based compensation	4,502	5,249
Lease liability	7,354	4,540
Basis difference in unconsolidated affiliates	11,509	6,881
Total deferred tax assets	71,247	62,618
Less valuation allowance	(23,078)	(21,505)
Deferred tax assets, net of valuation allowance	48,169	41,113
Deferred tax liabilities:
Property, plant, and equipment	42,980	44,001
Lease asset	7,776	4,970
Other liabilities	10,884	2,918
Total deferred tax liabilities	61,640	51,889
Net deferred tax liabilities	$ (13,471)	$ (10,776)