Quarterly report pursuant to Section 13 or 15(d)

Nature of Operations and Liquidity (Liquidity) (Details)

v3.7.0.1
Nature of Operations and Liquidity (Liquidity) (Details) - USD ($)
1 Months Ended 3 Months Ended
Jul. 25, 2017
Jul. 31, 2017
Jul. 31, 2016
Apr. 30, 2017
Apr. 30, 2016
Debt Instrument [Line Items]          
Approximate cash position   $ 6,213,569 $ 480,317 $ 2,756,217 $ 783,796
Proceeds from term loan   $ 4,732,677    
Secured Debt [Member] | Runway Growth Capital Fund [Member]          
Debt Instrument [Line Items]          
Debt instrument face amount $ 10,000,000        
Proceeds from term loan 5,000,000        
Remaining amount $ 5,000,000        
LIBOR interest rate 10.00%        
Debt instrument term 4 years