Investment Securities - Income Earned on Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Non-taxable:
Total	$ 55,050	$ 48,751	$ 113,051	$ 97,525
Held-to-maturity
Taxable:
Taxable	10,842	11,058	21,845	22,071
Non-taxable:
Non-taxable	10,097	10,225	20,197	20,351
Available-for-sale
Taxable:
Taxable	28,441	21,687	59,636	43,478
Non-taxable:
Non-taxable	$ 5,670	$ 5,781	$ 11,373	$ 11,625