XML 77 R67.htm IDEA: XBRL DOCUMENT v3.21.1
Mergers and acquisitions - Atlantic Capital Bank N.A. Branches - Narrative (Details)
$ in Thousands
Apr. 05, 2019
USD ($)
branch
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]        
Goodwill   $ 242,561 $ 169,051 $ 137,190
Atlantic Capital        
Business Acquisition [Line Items]        
Total purchase price $ 36,790      
Customer deposits $ 588,877      
Deposit premium percentage 6.25%      
Loans held for investment, net of fair value adjustments $ 374,966      
Percentage of loans outstanding 99.32%      
Goodwill $ 31,961      
Tennessee | Atlantic Capital        
Business Acquisition [Line Items]        
Number of branches acquired | branch 11      
Georgia | Atlantic Capital        
Business Acquisition [Line Items]        
Number of branches acquired | branch 3