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SECURITIES (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]    
Accrued interest receivable $ 32,200 $ 33,000
Debt securities, trading and equity securities, carrying value 6,415,588  
Amortized cost of FHLBs 8,100 12,300
Asset Pledged as Collateral    
Debt and Equity Securities, FV-NI [Line Items]    
Debt securities, trading and equity securities, carrying value $ 2,880,000 $ 1,490,000