Investment Securities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale investment securities	$ 0	$ 0	$ 0	$ 0
Investment securities:
Debt Securities, Available-for-sale [Line Items]
Average percent of amortized cost for securities in unrealized loss positions for more than 12 months	92.70%		92.70%