Leases - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Leases
Operating Lease, Right-of-Use Asset	$ 5,900,000		$ 5,900,000		$ 6,600,000
Operating Lease, Liability	6,248,000		6,248,000		$ 6,900,000
Additional lease assets recorded	8,000		43,000
Operating Lease, Payments	415,000	$ 401,000	884,000	$ 858,000
Lease, Cost	$ 442,000	$ 433,000	$ 882,000	$ 866,000
Option to extend			true
Operating Lease, Weighted Average Remaining Lease Term	6 years 3 months 18 days		6 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.30%		4.30%