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Equipment Note Payable and Financial Arrangements (Details Narrative) - USD ($)
$ in Thousands
May 31, 2019
Apr. 25, 2019
Apr. 23, 2019
Jan. 31, 2019
Dec. 28, 2018
Dec. 26, 2018
Apr. 15, 2019
Wells Fargo Bank N.A [Member]              
Line of credit facility, expiration date           Mar. 01, 2020  
Line of credit facility, maximum borrowing capacity           $ 7,500  
Line of credit facility, covenant terms           The borrowing agreement contains various covenants, the more significant of which require us to maintain a minimum tangible net worth, a minimum quick ratio, a minimum net income after tax and total capital expenditures less than $5,000. The Company was in violation of the capital expenditure covenant which was subsequently waived (per letter dated August 19, 2019).  
Minimum tangible net worth and capital expenditure           $ 5,000  
Line of credit             $ 2,000
Repayments of line of credit   $ 2,000          
Wells Fargo Bank N.A [Member] | LIBOR [Member]              
Line of credit facility, interest rate           1.50%  
First Secured Equipment Notes Payable [Member]              
Facility fixed rate percentage       4.13%      
Debt monthly principal and interest payments       $ 103      
Debt monthly term       84 months      
Second Secured Equipment Notes Payable [Member]              
Facility fixed rate percentage 3.98%            
Debt monthly principal and interest payments $ 102            
Debt monthly term 84 months            
Loan Agreement [Member]              
Debt term           The loan terms are seven years and are secured by the purchased equipment.  
Proceeds from funds     $ 7,500   $ 7,500    
Loan Agreement [Member] | Receipt 1 [Member]              
Purchase specific equipment amount           $ 7,500  
Facility fixed rate percentage           4.13%  
Loan Agreement [Member] | Receipt 2 [Member]              
Purchase specific equipment amount           $ 7,500  
Facility fixed rate percentage           3.98%  
Maximum [Member]              
Equipment financing amount           $ 15,000