Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS (Narrative) (Details)

v3.20.1
BORROWINGS (Narrative) (Details) - USD ($)
 3 Months Ended
Feb. 01, 2019
Aug. 23, 2012
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2016
Dec. 31, 2019
Jan. 01, 2018
Subordinated Borrowing [Line Items]              
Remaining available balance for the federal funds lines     $ 787,000,000.0     $ 682,000,000.0  
Remaining borrowing capacity with correspondent banks     25,000,000.0     25,000,000.0  
Maximum collateral dependent line of credit with the FHLB     5,300,000,000     5,200,000,000  
Subordinated debt     158,500,000   $ 150,000,000.0    
Prepayment penalty   $ 19,600,000          
Amortization expense included as a component of interest expense       $ 493,000      
Trust Preferred Capital Notes              
Subordinated Borrowing [Line Items]              
Trust preferred capital notes principal balance     150,500,000        
Remaining fair value discount on acquired notes     14,700,000        
Subordinated Debt              
Subordinated Borrowing [Line Items]              
Remaining fair value discount on acquired notes     $ 1,300,000     $ 1,400,000  
Stated percentage on debt instrument         5.00%    
Subordinated debt maturity date     Dec. 15, 2026   Dec. 15, 2021    
LIBOR | Subordinated Debt              
Subordinated Borrowing [Line Items]              
Three-month LIBOR rate plus     3.175%        
StellarOne Bank and Xenith [Member] | Trust Preferred Capital Notes              
Subordinated Borrowing [Line Items]              
Trust preferred capital notes principal balance     $ 58,500,000        
Trust preferred securities acquired     87,000,000.0        
Xenith              
Subordinated Borrowing [Line Items]              
Subordinated debt             $ 8,500,000
Xenith | Subordinated Debt              
Subordinated Borrowing [Line Items]              
Remaining fair value discount on acquired notes     $ 25,000       $ 259,000
Stated percentage on debt instrument             6.75%
Access National Bank              
Subordinated Borrowing [Line Items]              
Trust preferred capital notes principal balance $ 5,000,000.0