Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Summary of Warrant Activity (Details)

v3.7.0.1
Stock-Based Compensation - Summary of Warrant Activity (Details) - USD ($)
 12 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Warrants Outstanding, Beginning of Period 51,905 275,689
Warrants, Issued 4,166
Warrants, Exchanged (220,450)
Warrants, Expired (18,490) (7,500)
Warrants Outstanding, End of Period 33,415 51,905
Weighted Average Exercise Price of Warrants Outstanding, Beginning of Period $ 78.96 $ 42.24
Weighted Average Exercise Price, Issued 30.00
Weighted Average Exercise Price, Exchanged 32.40
Weighted Average Exercise Price, Expired 162.72 30.00
Weighted Average Exercise Price of Warrants Outstanding, End of Period $ 32.61 $ 78.96
Weighted Average Remaining Contractual Life in Years, Beginning of Period 1 year 2 months 27 days 4 years 1 month 13 days
Weighted Average Remaining Contractual Life in Years, End of Period 10 months 25 days 1 year 2 months 27 days
Warrant, Aggregate Intrinsic Value [1]
[1] This amount represents the difference between the conversion price and $4.80, the closing price of Dataram common stock on April 28, 2017 as reported on the NASDAQ Stock Market, for all in-the-money warrants outstanding.