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Bank Financing Arrangements (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended
Jan. 31, 2018
Sep. 30, 2019
Sep. 30, 2019
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    
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    
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 outstanding   $ 458,333 $ 458,333
Amount repaid   125,000 375,000
Interest expense   9,031 38,225
Line of Credit Facilities      
Amount outstanding   1,428,961 1,428,961
Amount borrowed     13,038,000
Amount repaid     12,925,817
Interest expense   16,633 45,310
Accrued interest payable   15,877 15,877
Remaining borrowing capacity   $ 237,000 $ 237,000