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Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
AmeriState Bank [Member]        
Related Party Transaction [Line Items]        
Long-term Debt, Term 25 years   25 years  
AmeriState Bank [Member] | Alternative [Member]        
Related Party Transaction [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.00%   5.00%  
James Horwich [Member]        
Related Party Transaction [Line Items]        
Related Party Transaction, Amounts of Transaction   $ 123   $ 497
Robert E Shaw [Member]        
Related Party Transaction [Line Items]        
Ownership of Common Stock, Percentage 7.50%   7.50%  
Voting Interest of Common Stock, Percentage 3.50%   3.50%  
Related Party Transaction, Purchases from Related Party $ 1,225 $ 1,837 $ 3,494 4,870
Related Party Transaction, Purchases from Related Party, Percentage 1.90% 2.50% 2.00%  
Robert P Rothman [Member]        
Related Party Transaction [Line Items]        
Related Party Transaction, Amounts of Transaction $ 73 $ 72 $ 216 $ 212