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Investment Securities - Proceeds from Calls and Sales, Realized Gains and Losses and Interest Income Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Proceeds from calls and sales of investment securities and other assets        
Proceeds from calls of investment securities $ 300 $ 700 $ 1,500 $ 1,100
Proceeds from sales of investment securities 0 0 0 2,500
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]        
Gross realized gains on sales of investment securities 0 0 0 100
Gross realized losses on sales of investment securities 0 0 0 0
Income tax expense related to net realized gains on sale of investment securities 0 0 0 0
Interest income from taxable and nontaxable investment securities        
Interest income from taxable investment securities 33,800 22,900 94,500 67,500
Interest income from non-taxable investment securities $ 3,800 $ 2,300 $ 10,100 $ 5,500