v3.26.3
INVESTMENT SECURITIES - Summary of Investment Securities in a Continuous Unrealized Loss Position (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
security
Dec. 31, 2025
USD ($)
security
Fair Value    
Less than 12 Months $ 206,474 $ 10,353
12 Months or Longer 1,041,707 1,257,538
Total 1,248,181 1,267,891
Gross Unrealized Losses    
Less than 12 Months (14,857) (21)
12 Months or Longer (275,895) (168,726)
Total $ (290,752) $ (168,747)
Number of Securities | security 770 693
U.S. Government-sponsored agency securities    
Fair Value    
Less than 12 Months $ 30 $ 0
12 Months or Longer 67,166 76,099
Total 67,196 76,099
Gross Unrealized Losses    
Less than 12 Months (1) 0
12 Months or Longer (14,346) (11,837)
Total $ (14,347) $ (11,837)
Number of Securities | security 13 12
State and municipal    
Fair Value    
Less than 12 Months $ 96,818 $ 5,468
12 Months or Longer 693,124 861,410
Total 789,942 866,878
Gross Unrealized Losses    
Less than 12 Months (10,760) (11)
12 Months or Longer (182,110) (91,830)
Total $ (192,870) $ (91,841)
Number of Securities | security 617 587
U.S. Government-sponsored mortgage-backed securities    
Fair Value    
Less than 12 Months $ 107,153 $ 4,885
12 Months or Longer 276,098 313,353
Total 383,251 318,238
Gross Unrealized Losses    
Less than 12 Months (4,070) (10)
12 Months or Longer (79,300) (64,783)
Total $ (83,370) $ (64,793)
Number of Securities | security 135 89
Foreign investment    
Fair Value    
Less than 12 Months $ 1,491  
12 Months or Longer 0  
Total 1,491  
Gross Unrealized Losses    
Less than 12 Months (9)  
12 Months or Longer 0  
Total $ (9)  
Number of Securities | security 1  
Corporate obligations    
Fair Value    
Less than 12 Months $ 982 $ 0
12 Months or Longer 5,319 6,676
Total 6,301 6,676
Gross Unrealized Losses    
Less than 12 Months (17) 0
12 Months or Longer (139) (276)
Total $ (156) $ (276)
Number of Securities | security 4 5