Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.20.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Loss Contingencies [Line Items]        
Lease expiration period     37 months  
Operating lease discount rate 6.50%   6.50%  
Operating lease beginning date     Mar. 01, 2014  
Operating lease ending date     Jul. 31, 2019  
Rent expense $ 26,000 $ 50,000 $ 76,000 $ 148,000
New Office Lease [Member]        
Loss Contingencies [Line Items]        
Operating lease beginning date     Jul. 15, 2019  
Operating lease ending date     Jul. 31, 2022  
Business Law Group [Member]        
Loss Contingencies [Line Items]        
Sublease Income     $ 4,900  
Minimum [Member]        
Loss Contingencies [Line Items]        
Operating lease remaining lease term     1 year  
Maximum [Member]        
Loss Contingencies [Line Items]        
Operating lease remaining lease term     3 years