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Post-effective amendment to a registration statement that is not immediately effective upon filing

Income Taxes (Narrative) (Details)

v2.4.0.8
Income Taxes (Narrative) (Details) (USD $)
12 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Income Taxes [Abstract]    
Net change in the valuation allowance $ 1,979,374 $ 518,331
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards $ 16,248,831  
Minimum [Member]
   
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards, expiration Jan. 01, 2029  
Years under examination 2010  
Maximum [Member]
   
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards, expiration Dec. 31, 2034  
Years under examination 2013