v3.26.1
Fair Value - Summary of Additional Information about Unobservable Inputs Used in Fair Value Measurement (Detail) - Fair Value, Measurements, Nonrecurring [Member] - Level 3 [Member]
$ in Thousands
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Individually Evaluated Real Estate Loans [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair Value $ 19,384 $ 13,337
Individually Evaluated Real Estate Loans [Member] | Minimum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.04 0.04
Individually Evaluated Real Estate Loans [Member] | Maximum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.17 0.22
Individually Evaluated Real Estate Loans [Member] | Weighted Average [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.11 0.13
Commercial Business [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair Value $ 13,484 $ 15,290
Individually Evaluated Other Real Estate Owned [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair Value $ 2,206 $ 2,198
Individually Evaluated Other Real Estate Owned [Member] | Minimum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.03 0.03
Individually Evaluated Other Real Estate Owned [Member] | Maximum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.13 0.13
Individually Evaluated Other Real Estate Owned [Member] | Weighted Average [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.08 0.08
EBITDA Multiple [Member] | Commercial Business [Member] | Minimum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.06 0.06
EBITDA Multiple [Member] | Commercial Business [Member] | Maximum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.21 0.21
EBITDA Multiple [Member] | Commercial Business [Member] | Weighted Average [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.10 0.10
Revenue Multiple [Member] | Commercial Business [Member] | Minimum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.001 0.001
Revenue Multiple [Member] | Commercial Business [Member] | Maximum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.01 0.01
Revenue Multiple [Member] | Commercial Business [Member] | Weighted Average [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range 0.01 0.01