Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS & DISPOSITIONS (Schedule of Business Acquisition and the Amounts of Acquired Identifiable Assets and Liabilities) (Details)

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ACQUISITIONS & DISPOSITIONS (Schedule of Business Acquisition and the Amounts of Acquired Identifiable Assets and Liabilities) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]        
Cash paid in acquisition   $ 14,304 $ 231 $ 4,077
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Goodwill   $ 727,168 $ 298,528  
Xenith        
Business Acquisition [Line Items]        
Consideration transferred, fair value $ 794,809      
Cash paid in acquisition 6,170      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Cash and cash equivalents 174,218      
AFS securities 295,782      
Restricted stock, at cost 27,569      
Net loans 2,453,856      
Premises and equipment 46,077      
OREO 5,250      
Core deposit intangibles 38,470      
Other assets 202,984      
Total assets 3,244,206      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Deposits 2,549,683      
Short-term borrowings 235,000      
Long-term borrowings 55,542      
Other liabilities 26,842      
Total liabilities 2,867,067      
Net identifiable assets acquired 377,139      
Goodwill 423,840      
Fair value of total consideration transferred $ 800,979