Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS - Narrative (Details)

v3.8.0.1
ACQUISITIONS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 01, 2018
Mar. 31, 2018
Mar. 31, 2017
Business Acquisition [Line Items]      
Cash paid in acquisition   $ 6,170 $ 0
Merger-related costs   $ 27,712 $ 0
Xenith      
Business Acquisition [Line Items]      
Number of shares equivalent to each share of acquired entity 0.9354    
Number of common shares issued 21,922,077    
Consideration transferred, fair value $ 794,809    
Cash paid in acquisition 6,170    
Performing | Xenith      
Business Acquisition [Line Items]      
Acquired performing loans, fair value 2,400,000    
Contractually required principal and interest payments 2,700,000    
Contractual cash flows not expected to be collected 22,200    
Nonperforming | Xenith      
Business Acquisition [Line Items]      
Fair value of loans acquired with a deterioration of credit quality 68,476    
Contractually required principal and interest payments $ 97,123