Leases, Summary (Details)	3 Months Ended
	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($) Lease	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)
Operating Leases [Abstract]
Lease extension option term	5 years
Operating lease ROU assets	$ 4,190,000		$ 4,800,000	$ 4,470,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Interest Receivable and Other Assets			Interest Receivable and Other Assets
Operating lease liability	$ 4,286,000		$ 4,920,000	$ 4,550,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Interest Payable and Other Liabilities			Interest Payable and Other Liabilities
Early termination of lease | Lease		1
Addition (Reduction) in ROU assets	$ 302,000	$ (482,000)
Addition (Reduction) in lease liability	$ 302,000	$ (494,000)
Minimum [Member]
Operating Leases [Abstract]
Remaining lease term	1 year
Lease extension option term	5 years
Maximum [Member]
Operating Leases [Abstract]
Remaining lease term	10 years
Lease extension option term	10 years