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Bank Financing Arrangements (Details Narrative)
 3 Months Ended
Jan. 29, 2021
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Amount outstanding     $ 1,939,492
Amount borrowed     3,980,000
Amount repaid     3,452,957
Interest expense     15,601
Accrued interest payable     14,560
Domestic Line of Credit      
Aggregate maximum advance amount $ 3,000,000    
Borrowing capacity description 80% of qualified receivables    
Debt reference rate U.S. Prime Rate    
Basis point added to reference rate of debt 0.0075    
Line of credit expiration date Jan. 31, 2023    
Amount outstanding   $ 1,000,000  
Interest expense   4,306  
Accrued interest payable   $ 2,917  
Foreign Line of Credit      
Aggregate maximum advance amount $ 500,000    
Borrowing capacity description 80% of qualified receivables    
Debt reference rate U.S. Prime Rate    
Basis point added to reference rate of debt 0.0075    
Line of credit expiration date Jan. 31, 2023    
Term Loan      
Amount outstanding     208,333
Amount repaid     125,000
Interest expense     $ 4,027