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Related Party Transactions - Narrative (Details) - USD ($)
12 Months Ended
Apr. 27, 2017
Feb. 22, 2017
Jan. 24, 2017
Jul. 06, 2016
Apr. 30, 2017
Apr. 30, 2016
Related Party Transaction [Line Items]            
Stock issued during period for services (in shares) 3,807 7,614 3,247 3,896    
Issuance of common stock for services $ 7,500 $ 15,000 $ 11,852 $ 8,688 $ 44,000 $ 44,000
Board of Directors            
Related Party Transaction [Line Items]            
Bank servicing fees         0 $ 8,800
Board Member One | Board of Directors            
Related Party Transaction [Line Items]            
Related related party transaction, amounts of transaction         72,000  
Board Member Two | Board of Directors            
Related Party Transaction [Line Items]            
Related related party transaction, amounts of transaction         $ 48,214  
Stock issued during period for services (in shares)         45,000  
Vesting period         3 years  
Issuance of common stock for services         $ 94,192