Income Taxes Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Deferred tax assets:
Inventories	$ 2,759	$ 2,316
Retirement benefits	407	824
State net operating losses	4,306	3,033
Federal net operating losses	4,852	0
State tax credit carryforwards	1,669	1,669
Federal tax credit carryforwards	4,590	4,136
Allowances for bad debts, claims and discounts	1,680	1,779
Other	5,167	3,958
Total deferred tax assets	25,430	17,715
Valuation allowance	(21,345)	(12,851)
Net deferred tax assets	4,085	4,864
Deferred tax liabilities:
Property, plant and equipment	4,176	4,955
Total deferred tax liabilities	4,176	4,955
Net deferred tax liability	$ (91)	$ (91)