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Courseware (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2017
Jan. 31, 2016
Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items]          
Amortization Expense of courseware, written off         $ 1,970,670
Courseware [Member]          
Finite-Lived Intangible Assets [Line Items]          
Courseware costs capitalized     $ 6,550 $ 81,634  
Amortization expense $ 13,663 $ 16,513 $ 44,664 $ 53,304