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SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 38 Months Ended
Jul. 17, 2024
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Jan. 01, 2023
Dec. 31, 2022
Apr. 19, 2021
Sep. 30, 2015
Equity, Class of Treasury Stock [Line Items]                        
Allowance for credit loss impact of adoption   $ 29,864   $ 29,864   $ 29,864 $ 29,165 $ 28,702        
Off-balance-sheet, credit risk exposure liability   $ 1,600   $ 1,600   $ 1,600   $ 1,700        
Number of shares reserved to be issued (in shares)   1,045,000   1,045,000   1,045,000            
Number of shares available to be issued under employee stock purchase plan (in shares)   665,000   665,000   665,000            
Number of shares authorized to be repurchased (in shares)                     978,000 416,000
Stock repurchase program, additional number of shares authorized to be repurchased                     562,000  
Treasury stock, shares acquired (in shares)   17,100 65,830 111,165 38,826 949,533            
Acquisition of treasury stock           $ 21,200            
Acquisition of treasury stock (in usd per share)           $ 22.36            
Stock repurchase program, shares available for future repurchase   28,467   28,467   28,467            
Stock repurchase program percentage of outstanding shares of common stock available for future purchase   0.30%   0.30%   0.30%            
Subsequent Event                        
Equity, Class of Treasury Stock [Line Items]                        
Dividends declared per share (in usd per share) $ 0.23                      
Common Stock                        
Equity, Class of Treasury Stock [Line Items]                        
Treasury stock, shares acquired (in shares)   0   0                
Cumulative Effect, Period of Adoption, Adjustment                        
Equity, Class of Treasury Stock [Line Items]                        
Allowance for credit loss impact of adoption                 $ 2,400 $ 2,423    
Off-balance-sheet, credit risk exposure liability                 100      
Allowance for credit losses on loans and off-balance sheet credit risk liability                 $ 2,500