Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Deferred tax assets:
Inventories	$ 16,829	$ 15,153
Other postretirement benefits and accrued items	7,260	8,382
Other reserves	8,046	9,962
Foreign tax attributes	5,750	6,410
State tax attributes, net of federal benefit	8,063	12,043
Stock-based compensation	5,249	3,608
Lease liability	4,540	4,988
Basis difference in unconsolidated affiliates	6,881	7,690
Total deferred tax assets	62,618	68,236
Less valuation allowance	(21,505)	(26,624)
Deferred tax assets, net of valuation allowance	41,113	41,612
Deferred tax liabilities:
Property, plant, and equipment	44,001	45,804
Lease asset	4,970	5,099
Other liabilities	2,918	1,765
Total deferred tax liabilities	51,889	52,668
Net deferred tax liabilities	$ (10,776)	$ (11,056)