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Securities & Allowance for Securities Credit Losses - Schedule of Debt Securities, Held-to-Maturity, Credit Quality Indicator (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total $ 302,609 $ 308,406
U.S. government and federal agencies    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 122,447 123,938
Mortgage Backed Securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 1,173 1,190
Corporate Bonds    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 58,409 59,629
State and municipal securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 120,580 123,649
AAA / AA / A    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 262,647 268,387
AAA / AA / A | U.S. government and federal agencies    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 122,447 123,938
AAA / AA / A | Mortgage Backed Securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 1,173 1,190
AAA / AA / A | Corporate Bonds    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 18,447 20,091
AAA / AA / A | State and municipal securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 120,580 123,168
BBB / BB / B    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 39,962 40,019
BBB / BB / B | U.S. government and federal agencies    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 0 0
BBB / BB / B | Mortgage Backed Securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 0 0
BBB / BB / B | Corporate Bonds    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total 39,962 39,538
BBB / BB / B | State and municipal securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Total $ 0 $ 481