Investment Securities - Proceeds from Sales and Maturities of Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of investment securities	$ 3,829	$ 89,997	$ 9,710	$ 126,862
Proceeds from maturities of investment securities	60,000	50,000	350,455	250,265
Gross realized gains	0	8	5	25
Gross realized losses	(2)	0	(23)	(80)
Net realized losses	$ (2)	$ 8	$ (18)	$ (55)