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SECURITIES (Securities with Continuous Loss Position) (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
numberOfSecurities
Dec. 31, 2024
USD ($)
numberOfSecurities
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 20,492 $ 82,787
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 193 871
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 1,652,823 1,748,465
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 280,559 355,971
Debt Securities, Available-for-sale, Unrealized Loss Position 1,673,315 1,831,252
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ 280,752 $ 356,842
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | numberOfSecurities 185 201
U.S. Government and agency obligations    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 6,548 7,933
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 344 559
Debt Securities, Available-for-sale, Unrealized Loss Position 6,548 7,933
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 344 559
Municipal bonds    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 20,492 15,497
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 193 287
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 92,685 91,156
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 28,424 30,166
Debt Securities, Available-for-sale, Unrealized Loss Position 113,177 106,653
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 28,617 30,453
Corporate bonds    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 0 2,541
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0 59
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 70,439 96,763
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 3,421 6,430
Debt Securities, Available-for-sale, Unrealized Loss Position 70,439 99,304
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 3,421 6,489
Mortgage-backed or related securities    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 0 44,749
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 0 524
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 1,483,151 1,552,613
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 248,370 318,816
Debt Securities, Available-for-sale, Unrealized Loss Position 1,483,151 1,597,362
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ 248,370 319,340
Asset-backed securities    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months   20,000
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   20,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss   $ 1