Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS (Narrative) (Details)

v3.3.1.900
ACQUISITIONS (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Business Acquisition [Line Items]        
Acquisition related cost excluded from supplemental pro forma earnings   $ 20,345 $ 2,132  
StellarOne Bank [Member]        
Business Acquisition [Line Items]        
Number of shares equivalent to each share of acquired entity 0.9739      
Number of common shares issued 22,147,874      
Value of Company common stock issued $ 549,489      
Fair value mark related to bank premises 3,200      
Acquired performing loans not expected to be collected $ 35,400      
Core deposit intangible assets, amortization period 8 years      
Premium on acquired time deposits       $ 10,800
Premium accretion on acquired time deposits period 20 months      
Premium on acquired FHLB Advances $ 3,200      
Premium on acquired FHLB advances period 55 months      
Discount on acquired trust preferred capital notes $ 7,500      
Discount on acquired trust preferred capital notes period 20 years      
Acquisition related cost excluded from supplemental pro forma earnings   $ 20,345 $ 2,132  
StellarOne Bank [Member] | Performing Financing Receivable [Member]        
Business Acquisition [Line Items]        
Acquired performing loans, Fair value $ 2,100,000      
Acquired performing loans, principal and interest payments receivable 2,500,000      
StellarOne Bank [Member] | Impaired loans [Member]        
Business Acquisition [Line Items]        
Fair value of loans acquired with a deterioration of credit quality $ 145,500