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Investment Securities - Schedule of unrealized loss on investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 85,995 $ 56,215
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 792 1,122
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 700,469 1,150,640
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 79,293 86,033
Debt Securities, Available-for-sale, Unrealized Loss Position 786,464 1,206,855
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 80,085 87,155
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]    
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 6,555 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 249 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 510,846 634,261
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 61,445 68,193
Debt Securities, Available-for-sale, Unrealized Loss Position 517,401 634,261
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 61,694 68,193
Obligations of States and Political Subdivisions    
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 34,256 46,685
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 528 420
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 137,471 103,993
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 16,115 11,100
Debt Securities, Available-for-sale, Unrealized Loss Position 171,727 150,678
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 16,643 11,520
Corporate Debt Securities    
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 0 9,530
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0 702
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 15,929 8,367
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1,720 1,883
Debt Securities, Available-for-sale, Unrealized Loss Position 15,929 17,897
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 1,720 2,585
Collateralized Loan Obligations    
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 44,935 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 14 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 36,223 404,019
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 13 4,857
Debt Securities, Available-for-sale, Unrealized Loss Position 81,158 404,019
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 27 $ 4,857
US Government-sponsored Enterprises Debt Securities    
Investment [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 249  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 1  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 249  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ 1