Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Common Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)

v3.7.0.1
Net Loss Per Common Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares
3 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Total 1,535,409 8,078,715
Stock Option [Member]    
Total 231,458 231,458
Stock Warrant [Member]    
Total 485,771
Convertible Preferred Stock [Member]    
Total 818,180 7,847,257