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Fair Value Measurements - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Temporary impairment of mortgage servicing rights $ 0 $ 0  
Fair value measurement of intangible assets 0 $ 0  
Transfers from Level 1 to Level 2 for financial assets 0    
Transfers from Level 2 to Level 1 for financial assets 0    
Transfers from Level 1 to Level 2 for financial liabilities 0    
Transfers from Level 2 to Level 1 for financial liabilities 0    
Transfers from Level 1 to Level 3 for financial liabilities 0    
Transfers from Level 3 to Level 1 for financial liabilities 0    
Transfers from Level 2 to Level 3 for financial liabilities 0    
Transfers from Level 3 to Level 2 for financial liabilities 0    
Loans held for sale were past due or on nonaccrual status $ 0   $ 0
Derivatives [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.15%    
Derivatives [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.034%    
Derivatives [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.336%    
Loans Held For Sale [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.15%    
Loans Held For Sale [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.034%    
Loans Held For Sale [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Sales Price Of Loans Held For Sale Increase Percentage 0.336%