Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.21.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Other Commitments [Line Items]    
Operating lease, rent expense $ 192,000 $ 235,000
Amount of contingent liabilities payable 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