Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Details)

v3.21.2
Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Office Space and Commercial Property        
Operating Leased Assets [Line Items]        
Lessee, operating lease, description     These leases have terms which range from two months to 16.5 years, and generally include an option to terminate or renew.  
Lessee, operating lease, option to terminate     The termination option can reduce the lease term for a period of 10 years  
Lessee, operating lease, terminate term     10 years  
Lessee, operating lease, option to extend     The renewal term can extend the lease term for an additional period of three years  
Lessee, operating lease, renewal term 3 years   3 years  
Operating lease cost for right - of - use assets $ 259 $ 231 $ 827 $ 736
Commercial Property        
Operating Leased Assets [Line Items]        
Sublease Income $ 77 $ 26 $ 241 $ 26
Minimum | Office Space and Commercial Property        
Operating Leased Assets [Line Items]        
Lessee, operating lease, term of contract 2 months   2 months  
Maximum | Office Space and Commercial Property        
Operating Leased Assets [Line Items]        
Lessee, operating lease, term of contract 16 years 6 months   16 years 6 months