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FAIR VALUE - Narrative (Detail)
12 Months Ended
Dec. 23, 2022
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Fair value option, aggregate fair value exceeded principal amount   $ (1,500,000) $ (1,200,000)  
Valuation allowance for impairment of assets   0 0  
Mortgage servicing rights impairment   0 (79,000)  
Purchase and Assumption Agreement, deposit liability transferred, premium percent 6.00%      
Individually evaluated loans        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Changes in fair value of impaired loans and foreclosed real estate   332,000 $ 0 $ (247,000)
Interest rate lock commitments with customers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Increase (decrease) in fair value   $ 3,000    
Level 3 | Municipal Bond        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Number of investment securities | security   1    
Level 3 | Collateralized Mortgage Obligations        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Number of investment securities | security   3    
Level 3 | Measurement Input, Pull Through | Interest rate lock commitments with customers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Asset, measurement input (percent)   0.92    
Level 3 | Measurement Input, Pull Through Increase (Decrease) | Interest rate lock commitments with customers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Asset, measurement input (percent)   0.05