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Line of Credit and Borrowing Agreement (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
May 13, 2020
Dec. 26, 2018
Oct. 30, 2020
Dec. 02, 2020
Jan. 24, 2020
Nov. 24, 2019
Wells Fargo Bank N.A [Member] | Master Collateral Loan and Security Agreement [Member]            
Proceeds from line of credit   $ 15,000        
Debt covenant description   The main financial covenants are listed below: Total Liabilities divided by Tangible Net Worth not greater than 2.5 to 1.0 at each fiscal quarter, Quick Ratio not less than 1.0 to 1.0 at each fiscal quarter end, and Fixed Charge Coverage Ratio not less than 1.25 to 1.0 as of each fiscal quarter end, determined on a trailing 4-quarter basis.        
Revolving Credit Facility [Member]            
Line of credit facility, maximum borrowing capacity     $ 7,500 $ 2,000    
Debt covenant, maximum allowable capital expenditures     $ 7,500      
Revolving Credit Facility [Member] | LIBOR [Member]            
Debt instrument, basis spread on variable rate     1.50%      
Revolving Credit Facility [Member] | Wells Fargo Bank N.A [Member]            
Line of credit expiration date     Mar. 01, 2022      
Line of credit         $ 2,500 $ 2,000
Repayment of line of credit $ 4,500          
Proceeds from loan $ 7,200