Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS (Narrative) (Details)

v3.20.4
ACQUISITIONS (Narrative) (Details) - USD ($)
12 Months Ended
Feb. 01, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]        
Cash paid in acquisition   $ 0 $ 12,000 $ 14,304,000
Merger-related costs   0 27,824,000 $ 39,728,000
Access National Bank        
Business Acquisition [Line Items]        
Number of shares equivalent to each share of acquired entity 0.75      
Company's common shares issued 15,842,026      
Consideration transferred, fair value $ 500,000,000.0      
Cash paid in acquisition $ 12,000      
Merger-related costs   $ 0 $ 26,200,000