Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Related Party Transactions - Additional Information (Detail)

v3.19.1

Related Party Transactions - Additional Information (Detail) - USD ($)		3 Months Ended
	Mar. 25, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Underwritten Public Offering [Member] \| Common Stock [Member]
Related Party Transaction [Line Items]
Number of common stock issued in offering	16,666,668
Dr. Frederick Telling, Chairman and Director [Member] \| Underwritten Public Offering [Member] \| Common Stock [Member]
Related Party Transaction [Line Items]
Number of common stock issued in offering	100,000
Dr. Frederick Telling, Chairman and Director [Member] \| Underwritten Public Offering [Member] \| Short-term Warrants [Member]
Related Party Transaction [Line Items]
Number of warrants purchased in period	50,000
Dr. Frederick Telling, Chairman and Director [Member] \| Underwritten Public Offering [Member] \| Long-term Warrants [Member]
Related Party Transaction [Line Items]
Number of warrants purchased in period	50,000
Dr. Alan Joslyn, Chief Executive Officer and President [Member] \| Underwritten Public Offering [Member] \| Common Stock [Member]
Related Party Transaction [Line Items]
Number of common stock issued in offering	66,667
Dr. Alan Joslyn, Chief Executive Officer and President [Member] \| Underwritten Public Offering [Member] \| Short-term Warrants [Member]
Related Party Transaction [Line Items]
Number of warrants purchased in period	33,333
Dr. Alan Joslyn, Chief Executive Officer and President [Member] \| Underwritten Public Offering [Member] \| Long-term Warrants [Member]
Related Party Transaction [Line Items]
Number of warrants purchased in period	33,333
Intrexon [Member]
Related Party Transaction [Line Items]
Accounts payable and accrued expenses		$ 61,905		$ 39,607
Percentage of outstanding common stock		3.36%	29.80%
Intrexon [Member] \| Oral Mucositis and Lantibiotic ECC [Member]
Related Party Transaction [Line Items]
Cash paid to Intrexon Corporation		$ 39,607	$ 78,606

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