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Fair Values of Financial Instruments - Additional Information (Detail) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Transfers from Level 1 to Level 3 for financial assets $ 0 $ 0
Transfers from Level 3 to Level 1 for financial assets 0 0
Transfers from Level 2 to Level 3 for financial assets 0 0
Transfers from Level 3 to Level 2 for financial assets 0 0
Transfers from Level 1 to Level 3 for financial liabilities 0 0
Transfers from Level 3 to Level 1 for financial liabilities 0 0
Transfers from Level 2 to Level 3 for financial liabilities 0 0
Transfers from Level 3 to Level 2 for financial liabilities 0 0
Fair value measurement of intangible assets 0 0
Loans held for sale 56,261,000 56,879,000
Loans Held For Sale Past Due [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans held for sale $ 0 $ 0
Loans Held For Sale [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.08%  
Loans Held For Sale [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.38%  
Loans Held For Sale [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.34%  
Derivatives [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.08%  
Derivatives [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.38%  
Derivatives [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Sales price of loans held for sale increase percentage 0.34%