Annual report pursuant to Section 13 and 15(d)

Secured Note and Accounts Receivable - Narrative (Details)

v3.20.2
Secured Note and Accounts Receivable - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 22, 2020
Apr. 29, 2015
Dec. 31, 2008
Mar. 31, 2008
Apr. 30, 2020
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2018
Jul. 31, 2018
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2014
Mar. 10, 2015
Sep. 30, 2014
Mar. 13, 2012
Sep. 16, 2011
Related Party Transaction [Line Items]                                      
Courseware sales         $ 14,079,193 $ 12,537,940 $ 12,085,965 $ 10,357,982 $ 10,214,142 $ 8,494,627 $ 8,095,344 $ 7,221,305 $ 49,061,080 $ 34,025,418          
Series C Preferred Shares pledged by HEMG, converted to common shares                               54,571      
Share price (in dollars per share)   $ 1.86                                  
Accounts receivable, secured - related party, net of allowance   $ 45,329     45,329       45,329       45,329 45,329          
Accounts receivable, before allowance for credit loss, noncurrent   671,291                             $ 772,793   $ 772,793
Proceeds from issuance of common stock $ 17,267,250 101,502                     16,044,879 0          
Accounts receivable, allowance for credit loss, noncurrent   $ 625,963     $ 625,963       $ 625,963       $ 625,963 $ 625,963          
Parent Company                                      
Related Party Transaction [Line Items]                                      
Courseware sales     $ 600,000 $ 455,000                              
Series C Preferred Shares pledged by HEMG, converted to common shares                                   54,571 772,793
Share price (in dollars per share)                             $ 2.28        
Receivable collateral valuation reserve                             $ 123,647