Other Borrowings - Narrative (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 25,000,000
Outstanding advances	0	$ 0
Established borrowing capacity with the FHLB	1,600,000,000	1,800,000,000
Unused borrowing capacity with the FHLB	1,300,000,000	1,600,000,000
Overnight advances with the FHLB	241,300,000	14,000,000
Term advances with the FHLB	$ 50,000,000	$ 110,000,000
Weighted average rate with the FHLB	4.12%	1.80%
Term advances mature within one year	$ 10,000,000
Term advances mature in over one year	40,000,000
Term advances mature in 2024	40,000,000
Callable FHLB borrowings	0
Outstanding on line of credit with bank	0	$ 0
Subsidiaries
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 99,000,000	$ 89,000,000