Investment Securities - Income Earned on Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Non-taxable:
Total	$ 53,220	$ 50,638	$ 166,271	$ 148,163
Held-to-maturity
Taxable:
Taxable	10,533	11,062	32,378	33,133
Non-taxable:
Non-taxable	10,101	10,137	30,298	30,488
Available-for-sale
Taxable:
Taxable	26,940	23,672	86,576	67,150
Non-taxable:
Non-taxable	$ 5,646	$ 5,767	$ 17,019	$ 17,392