Investment Securities - Securities Pledged (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, amortized cost, excluding accrued interest, before allowance for credit loss	$ 1,041,925	$ 984,579
Investment securities available for sale	1,019,201	934,923
Asset Pledged as Collateral without Right [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, amortized cost, excluding accrued interest, before allowance for credit loss	570,400	186,700
Investment securities available for sale	$ 551,500	$ 183,500