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SECURITIES (Available for Sale securities in continuous unrealized loss position) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
holding
Dec. 31, 2021
USD ($)
holding
Dec. 31, 2020
USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 173 37  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 333,099 $ 1,210,544  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (35,411) (21,197)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 1,062,964 1,000  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (132,268) (199)  
Debt Securities, Available-for-sale, Unrealized Loss Position 1,396,063 1,211,544  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss (167,679) (21,396)  
Equity Securities, FV-NI, Realized Gain (Loss) $ 0 $ 192 $ 14
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 123 12  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 155,944 $ 214,678  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (15,186) (5,534)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 154,653 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (30,248) 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 310,597 214,678  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (45,434) $ (5,534)  
Agency collateralized mortgage obligations [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 13 1  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 38,843 $ 22,960  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (3,031) (571)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 0 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 38,843 22,960  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (3,031) $ (571)  
Pooled Trust Preferred Securities Issued By Banks And Insurers [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 1 1  
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 1,034 1,000  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (169) (199)  
Debt Securities, Available-for-sale, Unrealized Loss Position 1,034 1,000  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (169) $ (199)  
US Treasury Securities [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 18 17  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 43,035 $ 811,993  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (6,350) (12,191)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 748,306 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (76,344) 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 791,341 811,993  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (82,694) $ (12,191)  
US Government Agencies Debt Securities [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 9 6  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 60,575 $ 160,913  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (7,292) (2,901)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 141,725 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (21,344) 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 202,300 160,913  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (28,636) $ (2,901)  
US States and Political Subdivisions Debt Securities [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 1    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 191    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (2)    
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 191    
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (2)    
Small Business Administration Pooled Securities [Member]      
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding 8    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 34,511    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (3,550)    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 17,246    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (4,163)    
Debt Securities, Available-for-sale, Unrealized Loss Position 51,757    
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (7,713)