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Bank Financing Arrangements (Details Narrative) - USD ($)
 12 Months Ended
Jan. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Accrued interest payable     $ 14,466
Remaining borrowing capacity   $ 1,487,000  
Domestic Line of Credit      
Aggregate maximum advance amount $ 2,000,000    
Borrowing capacity description 80% of qualified receivables    
Debt reference rate U.S. Prime Rate    
Basis point added to reference rate of debt 0.75%    
Line of credit expiration date Jan. 31, 2020    
Amount borrowed   4,865,000  
Amount repaid   6,069,915  
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 0.75%    
Line of credit expiration date Jan. 31, 2020    
Amount borrowed   765,000  
Amount repaid   972,534  
Term Loan for Stock Repurchase      
Aggregate maximum advance amount $ 4,000,000    
Borrowing capacity description Payable over 48 months    
Debt reference rate U.S. Prime Rate    
Basis point added to reference rate of debt 1.75%    
Amount repaid   333,333  
Interest expense   6,152  
Line of Credit Facilities      
Interest expense   $ 20,461