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Property and Equipment (Details) (USD $)
3 Months Ended 9 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2014
Jan. 31, 2013
Property and Equipment [Abstract]        
Depreciation and amortization $ 96,879 $ 77,484 $ 267,763 $ 211,004
Software amortization expense $ 87,610 $ 68,676 $ 242,259 $ 186,466