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EMPLOYEE BENEFITS (Details) - USD ($)
Apr. 30, 2019
Jan. 31, 2019
Apr. 30, 2018
Jan. 31, 2018
EMPLOYEE BENEFITS (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 38,036 38,036 28,743 29,415
Rex Shareholders [Member]        
EMPLOYEE BENEFITS (Details) [Line Items]        
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount (in Dollars) $ 162,000 $ 200,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 34,148   24,711  
Stock Option Plans 2015 [Member] | Share-based Payment Arrangement, Option [Member]        
EMPLOYEE BENEFITS (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 550,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 489,430