Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Quantitative Information about Level 3 Fair Value Assumptions for Assets Measured at Fair Value on Non-Recurring Basis (Detail)

v3.24.3
Fair Value Measurements - Quantitative Information about Level 3 Fair Value Assumptions for Assets Measured at Fair Value on Non-Recurring Basis (Detail) - Significant Unobservable Inputs - Non-recurring Basis
$ in Thousands
Sep. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 5,016 $ 7,352
Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 5,016 2,174
Commercial and Industrial    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value   $ 5,178
Alternative Investment, Valuation Technique [Extensible List]   us-gaap:MarketApproachValuationTechniqueMember
Minimum | Commercial and Industrial    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   (0.020)
Maximum | Commercial and Industrial    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   0.055
Weighted Average | Commercial and Industrial    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   (0.002)
Retail | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 1,683 $ 1,530
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember us-gaap:MarketApproachValuationTechniqueMember
Retail | Minimum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.045) 0.005
Retail | Maximum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.030 0.020
Retail | Weighted Average | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.010) 0.015
Hospitality | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 266 $ 338
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember us-gaap:MarketApproachValuationTechniqueMember
Hospitality | Minimum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.030) (0.030)
Hospitality | Maximum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.035 0.035
Hospitality | Weighted Average | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.003) (0.001)
Other | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value   $ 305
Alternative Investment, Valuation Technique [Extensible List]   us-gaap:MarketApproachValuationTechniqueMember
Other | Minimum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   (0.006)
Other | Maximum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   0.001
Other | Weighted Average | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range   (0.002)
Construction | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 1,194  
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember  
Construction | Minimum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.005  
Construction | Maximum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.020  
Construction | Weighted Average | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.015  
Residential | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 1,873 $ 1
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember us-gaap:MarketApproachValuationTechniqueMember
Residential | Minimum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.013) (0.015)
Residential | Maximum | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.008 0.003
Residential | Weighted Average | Real Estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.001) (0.006)
Repossessed Personal Property    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 1,216 $ 1,305
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember us-gaap:MarketApproachValuationTechniqueMember
Other Real Estate Owned    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 772 $ 117
Alternative Investment, Valuation Technique [Extensible List] us-gaap:MarketApproachValuationTechniqueMember us-gaap:MarketApproachValuationTechniqueMember
Other Real Estate Owned | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.035) (0.010)
Other Real Estate Owned | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 0.005 0.005
Other Real Estate Owned | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range (0.012) (0.002)