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Securities - Schedule of Available-for-Sale Securities with Unrealized Losses (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair Value    
Fair Value, Less than 12 Months $ 45,932 $ 76,389
Fair Value, 12 Months or Longer 789,496 880,651
Fair Value 835,428 957,040
Unrealized Losses    
Unrealized Losses, Less than 12 Months 286 1,142
Unrealized Losses, 12 Months or Longer 101,782 138,284
Unrealized Losses 102,068 139,426
U.S. Treasuries    
Fair Value    
Fair Value, Less than 12 Months 0 0
Fair Value, 12 Months or Longer 38,655 57,019
Fair Value 38,655 57,019
Unrealized Losses    
Unrealized Losses, Less than 12 Months 0 0
Unrealized Losses, 12 Months or Longer 2,194 3,784
Unrealized Losses 2,194 3,784
Obligations of U.S. Government sponsored entities    
Fair Value    
Fair Value, Less than 12 Months 0 14,085
Fair Value, 12 Months or Longer 150,482 188,296
Fair Value 150,482 202,381
Unrealized Losses    
Unrealized Losses, Less than 12 Months 0 515
Unrealized Losses, 12 Months or Longer 12,753 19,861
Unrealized Losses 12,753 20,376
Obligations of U.S. states and political subdivisions    
Fair Value    
Fair Value, Less than 12 Months 2,533 3,159
Fair Value, 12 Months or Longer 64,883 73,657
Fair Value 67,416 76,816
Unrealized Losses    
Unrealized Losses, Less than 12 Months 1 36
Unrealized Losses, 12 Months or Longer 5,631 8,602
Unrealized Losses 5,632 8,638
U.S. Government agencies    
Fair Value    
Fair Value, Less than 12 Months 13,501 27,082
Fair Value, 12 Months or Longer 40,746 35,879
Fair Value 54,247 62,961
Unrealized Losses    
Unrealized Losses, Less than 12 Months 19 89
Unrealized Losses, 12 Months or Longer 3,683 4,790
Unrealized Losses 3,702 4,879
U.S. Government sponsored entities    
Fair Value    
Fair Value, Less than 12 Months 29,898 32,063
Fair Value, 12 Months or Longer 492,286 523,353
Fair Value 522,184 555,416
Unrealized Losses    
Unrealized Losses, Less than 12 Months 266 502
Unrealized Losses, 12 Months or Longer 77,465 101,194
Unrealized Losses 77,731 101,696
U.S. corporate debt securities    
Fair Value    
Fair Value, Less than 12 Months 0 0
Fair Value, 12 Months or Longer 2,444 2,447
Fair Value 2,444 2,447
Unrealized Losses    
Unrealized Losses, Less than 12 Months 0 0
Unrealized Losses, 12 Months or Longer 56 53
Unrealized Losses $ 56 $ 53