Investment Securities - Income Earned on Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Non-taxable:
Total	$ 158,203	$ 111,693	$ 64,533
Held-to-Maturity Securities1
Taxable:
Taxable	33,778	4,208	985
Non-taxable:
Non-taxable	36,516	16,047	919
Available-for-Sale Securities1
Taxable:
Taxable	60,659	54,768	34,054
Non-taxable:
Non-taxable	$ 27,250	$ 36,670	$ 28,575