Federal Funds Purchased and Securities Sold under Agreements to Repurchase - Repurchase Agreements - Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	$ 5,890	$ 23,829
U.S. government-sponsored enterprises
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	5,890	9,113
Mortgage-backed securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total		14,716
Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	5,890	23,829
Overnight and continuous | U.S. government-sponsored enterprises
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	5,890	9,113
Overnight and continuous | Mortgage-backed securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total		14,716
Less than 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	0	0
Less than 90 days | U.S. government-sponsored enterprises
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	0	0
Less than 90 days | Mortgage-backed securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total		0
Greater than 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	0	0
Greater than 90 days | U.S. government-sponsored enterprises
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total	$ 0	0
Greater than 90 days | Mortgage-backed securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Total		$ 0