Securities - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of securities available for sale	$ 488,981,000	$ 0	$ 488,981,000	$ 0
Allowance for credit losses - held to maturity securities	32,000		32,000		$ 32,000
Secure government, public and trust deposits
Debt Securities, Available-for-sale [Line Items]
Available for sale securities pledged as collateral	771,201,000		771,201,000		824,417,000
Short-term borrowings
Debt Securities, Available-for-sale [Line Items]
Available for sale securities pledged as collateral	$ 14,822,000		$ 14,822,000		$ 18,184,000