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Securities - Schedule of Available-for-Sales Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,410,405 $ 1,548,482
Gross Unrealized Gains 12,367 9,376
Gross Unrealized Losses 113,493 141,208
Fair Value 1,309,279 1,416,650
U.S. Treasuries    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 85,036 114,418
Gross Unrealized Gains 380 495
Gross Unrealized Losses 3,305 5,009
Fair Value 82,111 109,904
Obligations of U.S. Government sponsored entities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 408,292 472,286
Gross Unrealized Gains 8,241 6,449
Gross Unrealized Losses 16,328 22,277
Fair Value 400,205 456,458
Obligations of U.S. states and political subdivisions    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 86,583 89,999
Gross Unrealized Gains 14 2
Gross Unrealized Losses 7,079 8,077
Fair Value 79,518 81,924
U.S. Government agencies    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 70,886 49,976
Gross Unrealized Gains 12 8
Gross Unrealized Losses 3,798 4,744
Fair Value 67,100 45,240
U.S. Government sponsored entities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 757,108 819,303
Gross Unrealized Gains 3,720 2,422
Gross Unrealized Losses 82,875 100,895
Fair Value 677,953 720,830
U.S. corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 2,500 2,500
Gross Unrealized Gains 0 0
Gross Unrealized Losses 108 206
Fair Value $ 2,392 $ 2,294