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
Oct. 31, 2012
integer
Apr. 30, 2012
Summary of option activity, Shares    
Balance April 30, 2012   1,745,900
Granted 100,000  
Exercised     
Expired (114,450)  
Balance October 31, 2012 1,731,450 1,745,900
Exercisable October 31, 2012 1,550,950  
Expected to vest October 31, 2012 1,645,000  
Summary of option activity, Weighted average exercise price    
Balance April 30, 2012   $ 2.34
Granted $ 0.69  
Exercised $ 0  
Expired $ 2.92  
Balance October 31, 2012 $ 2.21 $ 2.34
Exercisable October 31, 2012 $ 2.35  
Expected to vest October 31, 2012 $ 2.21  
Summary of option activity, Additional disclosures    
Balance April 30, 2012, Weighted average remaining contractual life 5 years 29 days [1] 5 years 3 months 14 days
Balance October 31, 2012, Weighted average remaining contractual life 5 years 29 days [1] 5 years 3 months 14 days
Exercisable October 31, 2012,Weighted average remaining contractual life 5 years 1 month 25 days [1]  
Expected to vest October 31, 2012,Weighted average remaining contractual life 5 years 29 days [1]  
Balance April 30, 2012, Aggregate intrinsic value      [2]
Granted, Aggregate intrinsic value     
Exercised, Aggregate intrinsic value     
Expired, Aggregate intrinsic value     
Balance October 31, 2012, Aggregate intrinsic value       [2]
Exercisable October 31, 2012, Aggregate intrinsic value     
Expected to vest October 31, 2012, Aggregate intrinsic value     
Summary of Significant Accounting Policies (Textual) [Abstract]    
Closing price of common stock on NASDAQ Stock Market $ 0.55  
Number of in-the-money options 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.