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FAIR VALUE - Narrative (Detail)
12 Months Ended
Dec. 23, 2022
Dec. 31, 2022
USD ($)
security
Dec. 31, 2021
USD ($)
security
Dec. 31, 2020
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Fair value option, aggregate fair value exceeded principal amount   $ (1,200,000) $ 150,000  
OREO balances   0 0  
Valuation allowance for impairment of assets   0 79,000  
Mortgage servicing rights impairment   (79,000) (987,000)  
Purchase and Assumption Agreement, deposit liability transferred, premium percent 6.00%      
Impaired loans        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Changes in fair value of impaired loans and foreclosed real estate   0 $ (247,000) $ 244,000
Interest rate lock commitments with customers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Increase (decrease) in fair value   $ 1,000    
Level 3 | Municipal Bond        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Number of investment securities | security   1 1  
Level 3 | Non-agency CMOs        
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