Leases - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases
Operating Lease, Right-of-Use Asset	$ 6,300,000		$ 6,600,000
Operating Lease, Liability	6,587,000		$ 6,900,000
Additional lease liabilities recorded	35,000
Operating Lease, Payments	469,000	$ 457,000
Lease, Cost	$ 440,000	$ 433,000
Option to extend	true
Operating Lease, Weighted Average Remaining Lease Term	6 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.30%