Annual report pursuant to Section 13 and 15(d)

Exclusive Channel Collaboration Agreements - Additional Information (Detail)

v3.19.1
Exclusive Channel Collaboration Agreements - Additional Information (Detail)
12 Months Ended
Dec. 31, 2018
Lantibiotic ECC [Member]  
Research and Development Arrangement, Contract to Perform for Others [Line Items]  
Termination notice period 90 days
Oral Mucositis ECC [Member]  
Research and Development Arrangement, Contract to Perform for Others [Line Items]  
Termination notice period 90 days
Maximum period to cure the breach 60 days