Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS - Narrative (Details)

v3.19.1
ACQUISITIONS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Feb. 01, 2019
Mar. 31, 2019
Mar. 31, 2018
Business Acquisition [Line Items]      
Cash paid in acquisition   $ 12 $ 6,170
Merger-related costs   18,122 27,712
Access National Bank      
Business Acquisition [Line Items]      
Number of shares equivalent to each share of acquired entity (shares) 0.75    
Number of common shares issued (shares) 15,842,026    
Consideration transferred, fair value $ 499,974    
Cash paid in acquisition 12    
Merger-related costs   $ 17,800 $ 0
Performing | Access National Bank      
Business Acquisition [Line Items]      
Acquired performing loans, fair value 2,100,000    
Contractually required principal and interest payments 2,500,000    
Contractual cash flows not expected to be collected 12,300    
Nonperforming | Access National Bank      
Business Acquisition [Line Items]      
Fair value of loans acquired with a deterioration of credit quality 17,894    
Contractually required principal and interest payments $ 24,329