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Stock Compensation Information (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Jul. 31, 2014
Jul. 31, 2013
Apr. 30, 2014
Stock Compensation Information [Abstract]      
Dividend payments $ 0   $ 0
Dividend yield 0.00% 0.00% 0.00%
Unrecognized compensation expense 300,000    
Cost recognition, weighted-average period, years 3 years 2 months 12 days    
Exercise of stock options, shares 0 0  
Fair value of awards vested 27,000 53,000  
Fair value of awards granted $ 100,000 $ 100,000