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Investment Securities (Details 2)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Schedule Of Available For Sale Debt Securities [Line Items]          
Amortized cost of Investment Securities available-for-sale $ 1,530,847   $ 1,530,847   $ 1,650,684
Gross Unrealized Gains 4,413   4,413   249
Gross Unrealized Losses (79,103)   (79,103)   (114,634)
Investment securities available-for-sale 1,456,157   1,456,157   1,536,299
Fair Value          
Less than 12 Months 108,909   108,909   332,417
12 months or Longer 1,001,017   1,001,017   1,150,098
Total fair value 1,109,926   1,109,926   1,482,515
Unrealized Losses          
Less than 12 Months (1,177)   (1,177)   (5,349)
12 months or Longer (77,926)   (77,926)   (109,285)
Total unrealized losses (79,103)   (79,103)   (114,634)
Gross realized gains and losses          
Gross realized gains 0 $ 0 0 $ 0  
Gross realized losses (997) 0 (997) 0  
Net realized losses (997) $ 0 (997) $ 0  
Investment securities pledged as collateral $ 235,110   $ 235,110   359,100
Number of available-for-sale debt securities 617   617    
Number of available-for-sale debt securities in an unrealized loss position 496   496    
U.S. Treasury and Federal agencies securities          
Schedule Of Available For Sale Debt Securities [Line Items]          
Amortized cost of Investment Securities available-for-sale $ 702,497   $ 702,497   786,417
Gross Unrealized Gains 1,963   1,963   24
Gross Unrealized Losses (15,029)   (15,029)   (28,692)
Investment securities available-for-sale 689,431   689,431   757,749
Fair Value          
Less than 12 Months 29,676   29,676   103,621
12 months or Longer 516,190   516,190   644,614
Total fair value 545,866   545,866   748,235
Unrealized Losses          
Less than 12 Months (138)   (138)   (1,324)
12 months or Longer (14,891)   (14,891)   (27,368)
Total unrealized losses (15,029)   (15,029)   (28,692)
U.S. States and political subdivisions securities          
Schedule Of Available For Sale Debt Securities [Line Items]          
Amortized cost of Investment Securities available-for-sale 102,059   102,059   86,305
Gross Unrealized Gains 526   526   33
Gross Unrealized Losses (2,722)   (2,722)   (3,706)
Investment securities available-for-sale 99,863   99,863   82,632
Fair Value          
Less than 12 Months 19,891   19,891   37,017
12 months or Longer 35,112   35,112   39,280
Total fair value 55,003   55,003   76,297
Unrealized Losses          
Less than 12 Months (501)   (501)   (670)
12 months or Longer (2,221)   (2,221)   (3,036)
Total unrealized losses (2,722)   (2,722)   (3,706)
Mortgage-backed securities - Federal agencies          
Schedule Of Available For Sale Debt Securities [Line Items]          
Amortized cost of Investment Securities available-for-sale 726,291   726,291   777,962
Gross Unrealized Gains 1,924   1,924   192
Gross Unrealized Losses (61,352)   (61,352)   (82,236)
Investment securities available-for-sale 666,863   666,863   695,918
Fair Value          
Less than 12 Months 59,342   59,342   191,779
12 months or Longer 449,715   449,715   466,204
Total fair value 509,057   509,057   657,983
Unrealized Losses          
Less than 12 Months (538)   (538)   (3,355)
12 months or Longer (60,814)   (60,814)   (78,881)
Total unrealized losses $ (61,352)   $ (61,352)   $ (82,236)