Long-Term Debt and Credit Arrangements (Term Loans ) (Details) - USD ($) $ in Thousands	Oct. 29, 2020	Dec. 25, 2021	Dec. 26, 2020	Oct. 28, 2020
Debt Instrument [Line Items]
Notes payable - buildings		$ 5,484	$ 5,900
AmeriState Bank
Debt Instrument [Line Items]
Notes payable - buildings				$ 10,000
Long-term debt, term				25 years
Debt instrument, stated interest rate (in percent)				5.00%
Interest rate for first five years (in percent)				4.00%
Interest reset period				5 years
Interest rate after five years (in percent)				3.50%
Greater Nevada Credit Union
Debt Instrument [Line Items]
Notes payable - buildings	$ 15,000
Long-term debt, term	10 years
Debt instrument, stated interest rate (in percent)	5.00%
Interest rate for first five years (in percent)	4.00%
Interest reset period	5 years
Interest rate after five years (in percent)	3.50%
Interest only term	3 years
Principal and interest term	7 years