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Revolving Line of Credit (Details Narrative) - Revolving Line of Credit - USD ($)
9 Months Ended
Nov. 30, 2018
Feb. 28, 2018
Revolving line of credit amount $ 750,000  
Revolving line of credit interest rate 5.25%  
Revolving line of credit description The loan is collateralized by all of the assets of the Company, except for the land and buildings. The line of credit is payable on demand and must be retired for a 30-day period once annually. If the Company fails to perform the 30-day annual pay down or if the bank elects to terminate the credit line, the bank may at its option convert the outstanding balance to a 36-month term note with payments including interest in 36 equal installments. As of November 30, 2018, $659,078 of the Company's credit line was being utilized to collateralize a letter of credit issued to a customer that has remitted a cash deposit to the Company on an order. The letter of credit expires in 2020.  
Revolving line of credit outstanding balance   $ 0
Revolving line of credit unused credit line $ 90,922 $ 750,000