XML 50 R38.htm IDEA: XBRL DOCUMENT v3.19.1
Grant Award - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended
Mar. 11, 2019
Mar. 31, 2019
Apr. 30, 2018
Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Grants receivable     $ 1,900,000  
Cash received from federal grant       $ 224,665
Reimbursement of grant expenses receivable   $ 161,007   $ 161,007
Grant [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenue from grant for notice of award     $ 224,665  
Grant [Member] | Eunice Kennedy Shriver National Institute Of Child Health And Human Development [Member] | Second Phase Of Research And Availability Of Funds [Member] | National Institutes Of Health [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenue from grant for notice of award $ 982,851 $ 982,851    
Grant [Member] | Eunice Kennedy Shriver National Institute Of Child Health And Human Development [Member] | Remaining Portion Of Research And Availability Of Funds [Member] | National Institutes Of Health [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenue from grant for notice of award $ 730,722