v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 22, 2025
shares
Jun. 30, 2026
USD ($)
shares
Jun. 30, 2025
shares
Jun. 30, 2026
USD ($)
Location
shares
Jun. 30, 2025
shares
Jul. 28, 2026
shares
Dec. 31, 2025
USD ($)
Equity, Class of Treasury Stock [Line Items]              
Number of locations | Location       79      
Minimum number of shares that company is required to repurchase 0            
First financial antidilutive securities excluded from eps computation   813,000 360,000 822,000 364,000    
Commitments to Extend Credit [Member]              
Equity, Class of Treasury Stock [Line Items]              
Reserve for unfunded commitments | $   $ 6,208,000   $ 6,208,000     $ 6,387,000
Maximum [Member]              
Equity, Class of Treasury Stock [Line Items]              
Stock repurchase program, number of shares authorized to be repurchased 5,000,000         7,200,000