Other Borrowings - Narrative (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 25,000,000.0
Outstanding advances	0	$ 0
Established borrowing capacity with the FHLB	1,500,000,000	1,600,000,000
Unused borrowing capacity with the FHLB	502,800,000	642,200,000
Overnight advances with the FHLB	247,000,000	477,100,000
Term advances with the FHLB	$ 543,247,000	$ 125,000,000
Weighted average rate with the FHLB	4.52%	5.15%
Term advances mature within one year	$ 398,200,000
Term advances mature in over one year	145,000,000.0
Term advances mature in 2026	70,000,000.0
Term advances mature in 2027	50,000,000.0
Term advances mature in 2028	25,000,000.0
Callable FHLB borrowings	0
Outstanding on line of credit with bank	0	$ 0
Letter of Credit
Line of Credit Facility [Line Items]
Established borrowing capacity with the FHLB	200,000,000	316,000,000
Subsidiaries
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 139,000,000.0	$ 99,000,000.0