Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Detail)

v3.20.1
Subsequent Events - Additional Information (Detail) - LPC [Member] - Purchase Agreement [Member] - USD ($)
Mar. 12, 2020
Sep. 14, 2017
Subsequent Event [Line Items]    
Additional purchase of common stock   80,000
Subsequent Event [Member]    
Subsequent Event [Line Items]    
Agreement term 30 months  
Agreement extended term 54 months  
Additional purchase of common stock 150,000  
Payments related to expense reimbursement $ 100,000