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Debt (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 29, 2019
Mar. 31, 2019
Dec. 31, 2018
Dec. 28, 2016
Debt (Textual)        
Outstanding balances under revolver   $ 2,603  
Sterling National Bank [Member]        
Debt (Textual)        
Aggregate amount of credit facility       $ 8,500
Subordinated indebtedness, description   (i) the minimum liquidity described above and (ii) a leverage ratio of not more than 2.0 to 1.0 for any fiscal month    
Outstanding balances under revolver       0
Loan and security agreement, description The Company and Sterling entered into a certain Second Amendment to Loan and Security Agreement (the "Second Amendment"), which replaced the existing fixed charge coverage ratio covenant with a minimum liquidity covenant. That covenant obligates the Company to not permit the sum of its unrestricted cash (as described in the Second Amendment) plus availability under the Revolver to drop below $2,000,000 at any time.      
Term Loan Credit Facility [Member] | Sterling National Bank [Member]        
Debt (Textual)        
Aggregate amount of credit facility       3,500
Interest on revolver - margin   4.50%    
Term loan amortize rate   $ 19    
Outstanding balances under revolver       3,014
Variable rate basis, description   Interest on the Revolver is variable, based upon the 30-day LIBOR rate (2.49% and 1.88% at March 31, 2019 and 2018, respectively) plus a margin of 4.00%. Interest on the Term Loan also is variable, based upon the 30-day LIBOR rate (2.49% and 1.88% at March 31, 2019 and 2018, respectively) plus a margin of 4.50%.    
Revolving Credit Facility [Member] | Sterling National Bank [Member]        
Debt (Textual)        
Aggregate amount of credit facility       5,000
Interest on revolver - margin   4.00%    
Outstanding balances under revolver       $ 2,086
Variable rate basis, description   Interest on the Revolver is variable, based upon the 30-day LIBOR rate (2.49% and 1.88% at March 31, 2019 and 2018, respectively) plus a margin of 4.00%.