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ACCOUNTING POLICIES (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
segment
Dec. 31, 2019
shares
Nov. 02, 2020
USD ($)
Oct. 20, 2020
subsidiary
ACCOUNTING POLICIES        
Pro forma dilutive instruments | shares   0    
Provision for prepaid dividend $ 0      
Number of segments | segment 1      
Impairment of goodwill $ 0      
Subsequent Event        
ACCOUNTING POLICIES        
Number of bank subsidiaries entering into a merger agreement | subsidiary       2
Authorized stock repurchase amount     $ 15,000