Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v3.19.3
Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended
Oct. 07, 2019
Sep. 12, 2019
Jul. 15, 2019
Sep. 30, 2019
Jul. 31, 2019
Jun. 12, 2019
Related Party Transaction [Line Items]            
Percentage of Shares Issuable Upon Exercise Of Original Warrants           50.00%
Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares       200,000    
Warrant exercise price       $ 0.30    
Stock options, term 10 years 10 years        
Two Thousand And Nineteen Short Term Convertible Notes [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Convertible note, aggregate principal       $ 215,000    
Convertible Promissory Notes [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares       2,100,000    
Warrant exercise price       $ 0.30    
Convertible note, aggregate principal       $ 2,200,000    
DrKelly [Member]            
Related Party Transaction [Line Items]            
Warrant exercise price           $ 0.40
DrKelly [Member] | Additional Shares [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares           25,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized           50,000
DrKelly [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Stock option granted, Shares 187,500 750,000        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price $ 0.39 $ 0.385        
DrWelch [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Stock option granted, Shares 187,500 250,000        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price $ 0.39 $ 0.385        
DrWelch [Member] | Two Thousand And Nineteen Short Term Convertible Notes [Member]            
Related Party Transaction [Line Items]            
Accrued but unpaid interest       75,343    
DrWelch [Member] | Two Thousand And Nineteen Short Term Convertible Notes [Member] | Subsequent Event [Member] | Tranche Two [Member]            
Related Party Transaction [Line Items]            
Convertible note, aggregate principal       $ 1,000,000    
DrWelch [Member] | Convertible Promissory Notes [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares       1,000,000    
Convertible note, aggregate principal       $ 1,075,343    
DavidF Welch [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares         1,000,000  
DavidF Welch [Member] | Additional Shares [Member]            
Related Party Transaction [Line Items]            
Warrants to purchase common shares, shares         500,000  
DrKelly And DrWelch [Member]            
Related Party Transaction [Line Items]            
Stock option granted, Shares     1,375,000