Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Narrative) (Details)

v3.19.1
Significant Accounting Policies (Narrative) (Details) - USD ($)
9 Months Ended 12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Apr. 30, 2018
Dec. 02, 2019
Feb. 28, 2019
Dec. 02, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Cash equivalents        
Cash insured by FDIC 250,000   250,000      
Amount of cash balance uninsured by FDIC 4,016,715   14,422,499      
Marketing and promotional costs 6,759,065 $ 3,388,996        
Long term accounts receivable 2,568,532   $ 1,315,050      
Restricted cash 120,864          
Letter of credit issued by bank $ 71,828          
Employee Stock Option [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities 3,651,448   2,978,010      
Warrant [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities 678,521   650,847      
Convertible Debt [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities 4,167   4,167      
Convertible debt $ 50,000   $ 50,000      
Convertible Debt Two [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Antidilutive securities 209,000          
Convertible debt $ 1,000,000     $ 1,000,000 $ 1,000,000 $ 2,000,000
Sales Revenue, Net [Member] | Non-US [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Percentage of revenues from students outside the United States 1.70% 2.10%