Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Other Commitments [Line Items]        
Operating lease, rent expense $ 362,000 $ 259,000 $ 1,000,000.0 $ 679,000
Amount of contingent liabilities payable $ 128,000   128,000  
Provision for contingent liabilities     $ 0  
Milan office        
Other Commitments [Line Items]        
Operating lease, option to renew     true  
Operating lease, renewal term 6 years   6 years