Organization, Use of Estimates and Basis of Presentation (Tables)

3 Months Ended

Jul. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of the Calculation of Earnings per Share, Basic and Diluted

	Three Months Ended July 31,
	2016			2015
Basic and diluted loss per share computation
Net loss attributable to common stockholders	$	(2,546,449	)	$	(2,913,101	)
Weighted Average common shares – basic	9,835,279			8,702,237
Basic and diluted net loss per share	$	(0.26	)	$	(0.33	)

Summary of Antidilutive Securities Excluded from Earnings Per Share Calculations

The following table reflects the total potential share-based instruments outstanding at July 31, 2016 and 2015 that could have an effect on the future computation of dilution per common share:

	July 31,
	2016	2015
Stock options	2,154,948	2,014,507
Warrants	2,109,840	2,109,840
Total common stock equivalents	4,264,788	4,124,347