Annual report pursuant to Section 13 and 15(d)

BORROWINGS (Narrative) (Details)

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BORROWINGS (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Subordinated Borrowing [Line Items]      
Remaining available balance for the federal funds lines $ 1,000,000 $ 997,000  
Maximum collateral dependent line of credit with the FHLB 6,000,000 6,000,000  
Trust Preferred Capital Securities 150,500 150,500  
Fair value discount 15,296 16,435  
Net proceeds from issuance of long-term borrowings 0 246,869 $ 0
Subordinated Debt 250,000 250,000  
Long-term debt, early repayments 0 364,695 $ 619,616
Remaining borrowing capacity 25,000 25,000  
2026 Subordinate Debt      
Subordinated Borrowing [Line Items]      
Subordinated Debt   $ 150,000  
Stated percentage on debt instrument   5.00%  
2031 Subordinate Debt      
Subordinated Borrowing [Line Items]      
Net proceeds from issuance of long-term borrowings   $ 246,900  
Subordinated Debt $ 250,000 $ 250,000  
Stated percentage on debt instrument 2.875% 2.875%  
Three-month LIBOR rate plus 0.00% 0.00%  
Maturity date Dec. 15, 2031 Dec. 15, 2031  
StellarOne Bank and Xenith | Trust Preferred Capital Notes      
Subordinated Borrowing [Line Items]      
Trust preferred capital notes principal balance $ 58,500    
Trust preferred securities acquired $ 92,000