XML 73 R59.htm IDEA: XBRL DOCUMENT v3.22.0.1
ACQUISITION OF REVERE BANK - Narrative (Details)
$ / shares in Units, $ in Thousands
Mar. 31, 2021
USD ($)
$ / shares
Mar. 31, 2020
USD ($)
bank
Dec. 31, 2020
USD ($)
Apr. 01, 2020
USD ($)
$ / shares
shares
Business Acquisition [Line Items]        
Amount of goodwill recognized     $ 500 $ 800
Sandy Spring Shareholders        
Business Acquisition [Line Items]        
Percentage of ownership in combined company       74.00%
Revere shareholders        
Business Acquisition [Line Items]        
Percentage of ownership in combined company       26.00%
Revere Bank        
Business Acquisition [Line Items]        
Business acquisition rate of share exchange (in shares) | shares       1.05
Closing price (in dollars per share) | $ / shares $ 22.64     $ 22.64
Consideration transferred $ 293,002 $ 293,000    
Assets acquired 2,846,356      
Number of banking offices | bank   11    
Amount of goodwill recognized $ 515