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Bank Financing Arrangements (Details Narrative) - USD ($)
 3 Months Ended
Jan. 31, 2018
Mar. 31, 2019
Amount outstanding   $ 1,796,284
Accrued interest payable   16,035
Remaining borrowing capacity   70,000
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 outstanding   1,458,140
Amount borrowed   3,543,000
Amount repaid   2,991,409
Interest expense   10,635
Remaining borrowing capacity   57,000
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 outstanding   338,144
Amount borrowed   566,000
Amount repaid   638,085
Interest expense   2,057
Remaining borrowing capacity   13,000
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   708,333
Interest expense   $ 15,844