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ACQUISITIONS (Details)
$ in Thousands
May 15, 2020
USD ($)
item
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]          
Goodwill   $ 24,191 $ 19,686 $ 23,239 $ 24,811
Simmons Bank          
Business Acquisition [Line Items]          
Number of branches acquired | item 3        
Loan production offices acquired | item 1        
Purchase consideration $ 61,599        
Deposit premium 6.06%        
Goodwill $ 4,505        
Loans, net 119,552        
Contractual balance 120,600        
Discount on loans $ 1,100        
Discount on loans (in percent) 0.90%        
Allowance for Loan and Lease Losses, Loans Acquired $ 0