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SUBORDINATED DEBT (Details) - USD ($)
1 Months Ended 12 Months Ended
Sep. 25, 2020
Apr. 30, 2018
Jul. 27, 2007
Jun. 30, 2006
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Subordinated Debenture [Line Items]              
Trust Preferred Securities to investors     $ 6,000,000 $ 4,000,000 $ 6,000,000    
Debentures, Maturity date     2037 2036 2033    
London Interbank Offer Rate     1.40% 1.65% 2.85%    
Subordinated debt           $ 144,592,000 $ 80,678,000
Junior Subordinated Debt              
Subordinated Debenture [Line Items]              
Junior subordinated deferrable interest debentures     $ 6,200,000 $ 4,100,000 $ 6,100,000    
Subordinated Debt One [Member]              
Subordinated Debenture [Line Items]              
Debt Instrument, Face Amount   $ 24,000,000.0          
Debt Instrument, Interest Rate, Effective Percentage   5.875%          
Debt Instrument Maturity Year   2028          
Subordinated Debt Two [Member]              
Subordinated Debenture [Line Items]              
Debt Instrument, Face Amount   $ 42,000,000.0          
Debt Instrument, Interest Rate, Effective Percentage   6.40%          
Debt Instrument Maturity Year   2033          
Subordinated Debt [Member]              
Subordinated Debenture [Line Items]              
Debt Instrument, Face Amount $ 65,000,000.0            
Debt Instrument, Interest Rate, Effective Percentage 4.25%            
Debt Instrument Maturity Year 2030            
Repayable term 10 years            
Period of interest payable semi annually 4.25%            
Basis points 412.60%            
Subordinated debt           144,600,000 80,700,000
Deferred issuance costs           2,200,000 1,100,000
Estimate of Fair Value Measurement [Member]              
Subordinated Debenture [Line Items]              
Subordinated debt           145,289,000 80,330,000
Estimate of Fair Value Measurement [Member] | Subordinated Debt [Member]              
Subordinated Debenture [Line Items]              
Subordinated debt           $ 700,000 $ 754,000