Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS (Narrative) (Details)

v3.20.2
BORROWINGS (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Feb. 01, 2019
Aug. 23, 2012
Jun. 30, 2019
Dec. 31, 2016
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Jan. 01, 2018
Subordinated Borrowing [Line Items]                
Remaining available balance for the federal funds lines         $ 972,000,000.0   $ 682,000,000.0  
Maximum collateral dependent line of credit with the FHLB         5,300,000,000   5,200,000,000  
Subordinated debt       $ 150,000,000.0 158,500,000      
Prepayment penalty   $ 19,600,000            
Amortization expense included as a component of interest expense     $ 502,000     $ 994,000    
Remaining borrowing capacity         25,000,000.0   25,000,000.0  
Trust Preferred Capital Notes                
Subordinated Borrowing [Line Items]                
Trust preferred capital notes principal balance         150,500,000      
Remaining fair value discount on acquired notes         14,500,000      
Long-term debt borrowings         155,159,000      
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%        
Debt maturity date       Dec. 15, 2021 Dec. 15, 2026      
Long-term debt borrowings         $ 158,500,000      
PPPLF Advances                
Subordinated Borrowing [Line Items]                
Stated percentage on debt instrument         0.35%      
Long-term debt borrowings         $ 189,941,000      
Remaining borrowing capacity         $ 1,500,000,000      
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               $ 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