Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 28, 2024	Dec. 30, 2023
Deferred tax assets:
Inventories	$ 17,296	$ 19,162
Other postretirement benefits and accrued items	16,202	10,174
Other reserves	6,870	6,956
Foreign tax attributes	4,676	4,862
State tax attributes, net of federal benefit	3,932	6,728
Stock-based compensation	5,100	4,502
Lease liability	6,230	7,354
Basis difference in unconsolidated affiliates	11,649	11,509
Total deferred tax assets	71,955	71,247
Less valuation allowance	(16,692)	(23,078)
Deferred tax assets, net of valuation allowance	55,263	48,169
Deferred tax liabilities:
Property, plant, and equipment	52,405	42,980
Lease asset	6,670	7,776
Other liabilities	10,198	10,884
Total deferred tax liabilities	69,273	61,640
Net deferred tax liabilities	$ (14,010)	$ (13,471)