Significant Accounting Policies - Schedule of Common Stock Equivalents (Details) - shares	9 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Common stock equivalent shares	1,046,477	747,816
Stock Options [Member]
Common stock equivalent shares	710,019	544,691
Stock Purchase Warrant [Member]
Common stock equivalent shares	336,458	203,125