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Investment Securities -Summary of Investment Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost $ 12,895  
Debt securities, maturing 1 to 5 years, amortized cost 143,439  
Debt securities, maturing 5 to 10 years, amortized cost 244,690  
Debt securities, maturing over 10 years, amortized cost 865,036  
Amortized Cost 1,266,060 $ 1,184,288
Debt securities, maturing within 1 year, fair value 12,836  
Debt securities, maturing 1 to 5 years, fair value 133,378  
Debt securities, maturing 5 to 10 years, fair value 220,847  
Debt securities, maturing over 10 years, fair value 752,078  
Debt securities [1] $ 1,119,139 1,048,322
Available-for-sale securities, maturing within 1 year, weighted average yield 3.77%  
Available-for-sale securities, maturing 1 to 5 years, weighted average yield 2.39%  
Available-for-sale securities, maturing 5 to 10 years, weighted average yield 3.06%  
Available-for-sale securities, maturing over 10 years, weighted average yield 2.76%  
Available-for-sale securities, total weighted average yield 2.79%  
U.S. Treasury and government agencies    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost $ 1,138  
Debt securities, maturing 1 to 5 years, amortized cost 15,218  
Debt securities, maturing 5 to 10 years, amortized cost 7,228  
Debt securities, maturing over 10 years, amortized cost 5,833  
Amortized Cost 29,417 30,999
Debt securities, maturing within 1 year, fair value 1,128  
Debt securities, maturing 1 to 5 years, fair value 14,233  
Debt securities, maturing 5 to 10 years, fair value 7,214  
Debt securities, maturing over 10 years, fair value 5,768  
Debt securities 28,343 30,296
U.S. government sponsored agencies    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost 0  
Debt securities, maturing 1 to 5 years, amortized cost 67,076  
Debt securities, maturing 5 to 10 years, amortized cost 86,208  
Debt securities, maturing over 10 years, amortized cost 87,776  
Amortized Cost 241,060 128,500
Debt securities, maturing within 1 year, fair value 0  
Debt securities, maturing 1 to 5 years, fair value 62,272  
Debt securities, maturing 5 to 10 years, fair value 82,424  
Debt securities, maturing over 10 years, fair value 86,220  
Debt securities 230,916 118,607
States and political subdivisions    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost 9,756  
Debt securities, maturing 1 to 5 years, amortized cost 44,335  
Debt securities, maturing 5 to 10 years, amortized cost 64,855  
Debt securities, maturing over 10 years, amortized cost 113,568  
Amortized Cost 232,514 239,906
Debt securities, maturing within 1 year, fair value 9,718  
Debt securities, maturing 1 to 5 years, fair value 41,387  
Debt securities, maturing 5 to 10 years, fair value 54,369  
Debt securities, maturing over 10 years, fair value 97,330  
Debt securities 202,804 213,296
Residential mortgage-backed securities    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost 1  
Debt securities, maturing 1 to 5 years, amortized cost 3,715  
Debt securities, maturing 5 to 10 years, amortized cost 55,991  
Debt securities, maturing over 10 years, amortized cost 637,222  
Amortized Cost 696,929 717,772
Debt securities, maturing within 1 year, fair value 1  
Debt securities, maturing 1 to 5 years, fair value 3,560  
Debt securities, maturing 5 to 10 years, fair value 51,066  
Debt securities, maturing over 10 years, fair value 546,375  
Debt securities 601,002 628,924
Commercial mortgage-backed securities    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost 0  
Debt securities, maturing 1 to 5 years, amortized cost 12,095  
Debt securities, maturing 5 to 10 years, amortized cost 26,908  
Debt securities, maturing over 10 years, amortized cost 20,637  
Amortized Cost 59,640 60,611
Debt securities, maturing within 1 year, fair value 0  
Debt securities, maturing 1 to 5 years, fair value 10,978  
Debt securities, maturing 5 to 10 years, fair value 22,672  
Debt securities, maturing over 10 years, fair value 16,385  
Debt securities 50,035 51,234
Bank-issued trust preferred securities    
Schedule of Available-for-sale Securities    
Debt securities, maturing within 1 year, amortized cost 2,000  
Debt securities, maturing 1 to 5 years, amortized cost 1,000  
Debt securities, maturing 5 to 10 years, amortized cost 3,500  
Debt securities, maturing over 10 years, amortized cost 0  
Amortized Cost 6,500 6,500
Debt securities, maturing within 1 year, fair value 1,989  
Debt securities, maturing 1 to 5 years, fair value 948  
Debt securities, maturing 5 to 10 years, fair value 3,102  
Debt securities, maturing over 10 years, fair value 0  
Debt securities $ 6,039 $ 5,965
[1]     Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $238, respectively, at June 30, 2024, and $0 and $238, respectively, at December 31, 2023.