Leases - Summary of Additional Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lease Cost
Operating lease cost	$ 695	$ 696
Short term lease cost	9	9
Total lease cost	704	705
Other information
Operating leases - operating cash flows	$ 669	$ 669
Weighted average lease term - operating leases, in years	10 years 8 months 26 days	10 years 9 months 18 days
Weighted average discount rate - operating leases (percent)	3.29%	3.33%