Investment Securities - Total Gross Proceeds from Sales of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Available for sale (AFS):
Available-for-sale securities, gross realized gains	$ 0	$ 49	$ 14	$ 324
Available-for-sale securities, gross realized losses	156	1	182	1
U.S. Government and agency securities
Available for sale (AFS):
Available-for-sale securities, gross realized gains	0	0	0	0
Mortgage-backed securities
Available for sale (AFS):
Available-for-sale securities, gross realized gains	0	0	0	0
State and political securities
Available for sale (AFS):
Available-for-sale securities, gross realized gains	0	1	14	1
Available-for-sale securities, gross realized losses	156	1	182	1
Other debt securities
Available for sale (AFS):
Available-for-sale securities, gross realized gains	0	48	0	323
Available-for-sale securities, gross realized losses	$ 0	$ 0	$ 0	$ 0