Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of option activity (Details)

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Summary of Significant Accounting Policies - Summary of option activity (Details) (USD $)
 3 Months Ended
Jul. 31, 2012
Apr. 30, 2012
Summary of option activity, Shares    
Balance April 30, 2012 1,745,900  
Granted 100,000  
Exercised 0  
Expired 0  
Balance July 31, 2012 1,845,900  
Exercisable July 31, 2012 1,397,400  
Expected to vest July 31, 2012 1,754,000  
Summary of option activity, Weighted average exercise price    
Balance April 30, 2012 $ 2.34  
Granted $ 0.69  
Balance July 31, 2012 $ 2.25  
Exercisable July 31, 2012 $ 2.51  
Expected to vest July 31, 2012 $ 2.25  
Summary of option activity, Additional disclosures    
Balance April 30, 2012, Weighted average remaining contractual life 5 years 18 days 5 years 3 months 14 days
Balance July 31, 2012, Weighted average remaining contractual life 5 years 18 days 5 years 3 months 14 days
Exercisable July 31, 2012,Weighted average remaining contractual life 5 years 4 days [1]  
Expected to vest July 31, 2012,Weighted average remaining contractual life 5 years 18 days [1]  
Balance April 30, 2012, Aggregate intrinsic value $ 0 [2]  
Balance July 31, 2012, Aggregate intrinsic value 0 [2]  
Exercisable July 31, 2012, Aggregate intrinsic value $ 0  
[1] This amount represents the weighted average remaining contractual life of stock options in years.
[2] This amount represents the difference between the exercise price and $0.64, the closing price of Dataram common stock on July 31, 2012 as reported on the NASDAQ Stock Market, for all in-the-money options outstanding and all the in-the-money shares exercisable. There were nil in-the-money options at July 31, 2012.