Leases (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Components of operating leases [Abstract]
Operating lease cost		$ 424	$ 395	$ 1,259	$ 1,357
Variable lease cost		15	16	46	52
Short-term lease cost		17	10	47	26
Total		456	$ 421	1,352	$ 1,435
Supplemental balance sheet information related to operating leases [Abstract]
Lease right of use asset	[1]	$ 6,861		$ 6,861		$ 7,646
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		Other Assets		Other Assets		Other Assets
Lease liabilities	[2]	$ 6,989		$ 6,989		$ 7,868
Operating Lease, Liability, Statement of Financial Position [Extensible List]		Other Liabilities		Other Liabilities		Other Liabilities
Weighted average remaining lease term		6 years 7 months 6 days		6 years 7 months 6 days		7 years 1 month 13 days
Weighted average discount rate		2.30%		2.30%		2.40%
Maturities of lease liabilities [Abstract]
Three months ending December 31, 2021		$ 432		$ 432
2022		1,620		1,620
2023		1,305		1,305
2024		816		816
2025		809		809
2026 and thereafter		2,539		2,539
Total lease payments		7,521		7,521
Less imputed interest		(532)		(532)
Total	[2]	$ 6,989		$ 6,989		$ 7,868

[1] Included in Accrued income and other assets in our Condensed Consolidated Statements of Financial Condition.

[2] Included in Accrued expenses and other liabilities in our Condensed Consolidated Statements of Financial Condition.