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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] Ìý Ìý Ìý Ìý Ìý Ìý
Cash equivalents Ìý Ìý Ìý Ìý
Cash insured by FDIC 250,000 Ìý 250,000 Ìý Ìý Ìý
Amount of cash balance uninsured by FDIC 4,016,715 Ìý 14,422,499 Ìý Ìý Ìý
Marketing and promotional costs 6,759,065 $ 3,388,996 Ìý Ìý Ìý Ìý
Long term accounts receivable 2,568,532 Ìý $ 1,315,050 Ìý Ìý Ìý
Restricted cash 120,864 Ìý Ìý Ìý Ìý Ìý
Letter of credit issued by bank $ 71,828 Ìý Ìý Ìý Ìý Ìý
Employee Stock Option [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive securities 3,651,448 Ìý 2,978,010 Ìý Ìý Ìý
Warrant [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive securities 678,521 Ìý 650,847 Ìý Ìý Ìý
Convertible Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive securities 4,167 Ìý 4,167 Ìý Ìý Ìý
Convertible debt $ 50,000 Ìý $ 50,000 Ìý Ìý Ìý
Convertible Debt Two [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive securities 209,000 Ìý Ìý Ìý Ìý Ìý
Convertible debt $ 1,000,000 Ìý Ìý $ 1,000,000 $ 1,000,000 $ 2,000,000
Sales Revenue, Net [Member] | Non-US [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Percentage of revenues from students outside the United States 1.70% 2.10% Ìý Ìý Ìý Ìý