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ACQUISITIONS (Details) - USD ($)
12 Months Ended
Oct. 01, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]          
Total assets   $ 4,314,254,000 $ 3,666,567,000    
Loans, net of allowance for loan losses   2,475,753,000 2,215,168,000    
Total deposits   3,738,185,000 3,130,534,000    
Goodwill   29,322,000 $ 23,620,000 $ 23,620,000 $ 23,620,000
NXT Bancorporation, Inc          
Business Acquisition [Line Items]          
Percentage of voting interests acquired 100.00%        
Stock consideration per share 67.6783        
Cash consideration per share $ 400        
Share Price $ 16.27        
Goodwill $ 5,702,000        
Cash consideration 10,633,000        
Market value of shares issued as part of consideration $ 29,270,000        
Stock consideration (number of shares) 1,799,016        
Business Combination, Consideration Transferred $ 39,903,000        
pre-tax acquisition expenses   $ 1,416,000