Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v3.10.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Nov. 13, 2018
Dec. 31, 2017
Intrexon [Member] | Oral Mucositis and Lantibiotic Exclusive Channel Collaboration Agreements [Member]            
Related Party Transaction [Line Items]            
Cash paid to Intrexon Corporation $ 134,883 $ 0 $ 294,116 $ 524,620    
Accounts payable and accrued expenses $ 149,591   $ 149,591     $ 39,457
Principal Owner [Member] | Intrexon [Member]            
Related Party Transaction [Line Items]            
Percentage of outstanding common stock 8.30% 31.40% 8.30% 31.40%    
Principal Owner [Member] | Intrexon [Member] | Subsequent Event [Member]            
Related Party Transaction [Line Items]            
Percentage of outstanding common stock         5.20%