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SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL - Narrative (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended 32 Months Ended
Jan. 23, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2023
Jan. 01, 2023
Apr. 19, 2021
Sep. 30, 2015
Class of Stock [Line Items]                
Impact of adopting ASC 326   $ 28,702 $ 25,178   $ 28,702      
Off-balance-sheet, credit risk exposure     $ 1,633          
Common stock reserved to be issued under dividend reinvestment and stock purchase plan (in shares)   1,045,000     1,045,000      
Shares available to be issued under the plan (in shares)   665,000            
Outstanding shares of common stock authorized to be repurchased (in shares)             978,000 416,000
Number of additional shares authorized to be repurchased             562,000  
Shares repurchased under the program (in shares)   34,380 482,712 19,388 949,533      
Total cost of shares repurchased under the program         $ 21,200      
Shares repurchased under the program, price per share (in dollars per share)         $ 22.36      
Stock available for future repurchases (in shares)   28,467     28,467      
Stock available for future repurchases, percentage   0.30%     0.30%      
Amount available for dividend distribution   $ 55,000     $ 55,000      
Maximum amount available to loan nonbank affiliates   $ 32,100 $ 29,300   $ 32,100      
Cumulative Effect, Period of Adoption, Adjustment                
Class of Stock [Line Items]                
Impact of adopting ASC 326     $ 2,423     $ 2,423    
Off-balance-sheet, credit risk exposure           100    
Allowance for credit losses on loans and off-balance sheet credit risk liability           $ 2,500    
Subsequent Event                
Class of Stock [Line Items]                
Cash dividend declared by the Board (in dollars per share) $ 0.20