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6. EMPLOYEE BENEFIT PLAN (Details) - 401(k) Plan [Member] - USD ($)
12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
6. EMPLOYEE BENEFIT PLAN (Details) [Line Items]    
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 133,300 $ 89,400
Stock Issued During Period, Shares, Treasury Stock Reissued 40,641 9,602