Stockholders' Equity - Schedule of Stockholders' Equity Note, Warrants or Rights (Details)	6 Months Ended
	Oct. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Number of Warrants
Warrants outstanding, beginning of period | shares	3,308,275
Warrants, issued | shares	50,000
Warrants outstanding, end of period | shares	3,358,275
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value
Warrants, weighted average exercise price outstanding, beginning of period | $ / shares	$ 3.52
Warrants, weighted average exercise price, issued | $ / shares	2.50
Warrants, weighted average exercise price outstanding, end of period | $ / shares	$ 3.51
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Warrants, weighted average remaining contractual term, beginning of period	0 years
Warrants, weighted average remaining contractual terms, issued	0 years
Warrants, weighted average remaining contractual term, end of period	0 years
Warrants, aggregate intrinsic value, outstanding, beginning of period | $		[1]
Warrants, aggregate intrinsic value, issued | $		[1]
Warrants, aggregate intrinsic value, outstanding, end of period | $		[1]

[1] This amount represents the difference between the conversion price and $1.11, the closing price of Dataram common stock on October 31, 2015 as reported on the NASDAQ Stock Market, for all in-the-money warrants outstanding.