Derivative Financial Instruments - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge	4 years
Credit exposure to settled variation margin in excess of customer related interest rate swap	$ 400,000	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other	Other	Other
Derivative, notional amount	$ 2,400,000,000	$ 2,400,000,000
Derivative, gain (loss) on derivative, net	100,000	(200,000)	$ (700,000)
Derivative asset	20,456,000	23,861,000
Derivative liability	63,075,000	81,422,000
Loan Origination Commitments
Derivative [Line Items]
Derivative, notional amount	10,500,000	8,300,000
Derivative asset	100,000	100,000
Derivative liability	100,000	100,000
Forward Contracts
Derivative [Line Items]
Derivative, notional amount	9,200,000	10,000,000
Cleared Derivative Transaction
Derivative [Line Items]
Additional collateral posted	85,900,000	84,100,000
Non Cleared Derivative Transactions | Customer Related Interest Rate Swap Derivatives
Derivative [Line Items]
Additional collateral posted	3,000,000	1,000,000
Fair value of interest rate swap liabilities that are net in a net liability position	1,900,000	$ 0
Interest Income | Active Cash Flow Hedges
Derivative [Line Items]
Interest rate swap cash flow hedges amount expected to reclassified from other comprehensive income to income statement in the next twelve months (less than for amounts related to terminated cash flow hedges)	$ 38,500,000