Leases - Summary of Additional Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Lease Cost
Operating lease cost	$ 710	$ 675	$ 2,111	$ 2,030
Short term lease cost	9	9	26	26
Total lease cost	$ 719	$ 684	2,137	2,056
Other information
Operating leases - operating cash flows			$ 2,012	$ 2,015
Weighted average lease term - operating leases, in years	10 years 10 months 6 days	11 years 1 month 9 days	10 years 10 months 6 days	11 years 1 month 9 days
Weighted average discount rate - operating leases (percent)	3.30%	3.33%	3.30%	3.33%