v3.26.1
Leases - Additional Information (Detail)
 3 Months Ended 6 Months Ended
Jun. 11, 2024
USD ($)
Property
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2026
USD ($)
Number
$ / ft²
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2025
USD ($)
Lessee Lease Description [Line Items]                
Lease expiration month and year         2046-01      
Future lease payments   $ 10,321,000     $ 10,321,000      
Finance lease liability   1,421,000     1,421,000     $ 1,452,000
Operating lease, Right-of-use asset   6,143,000     6,143,000     5,354,000
Operating lease liability   6,143,000     $ 6,143,000     $ 5,354,000
Lease agreement base rent per square foot | $ / ft²         21      
Rent Increases Per Square Foot Each Of First Five Years | $ / ft²         1      
Annual increment in base rent of lease, percentage         2.50%      
Leased ATMs Expires in August 2030                
Lessee Lease Description [Line Items]                
Lease expiration month and year         2030-08      
Future lease payments   316,000     $ 316,000      
Operating lease expense   19,000 $ 19,000   38,000 $ 38,000    
Branch Office Expires in August 2027                
Lessee Lease Description [Line Items]                
Future lease payments   1,700,000     1,700,000      
Operating lease expense   $ 21,000 10,000   $ 35,000 20,000    
Real estate and equipment [Member] | Maximum [Member]                
Lessee Lease Description [Line Items]                
Operating leases remaining lease terms   15 years     15 years      
Office and Branch [Member]                
Lessee Lease Description [Line Items]                
Aggregate cash purchase price $ 7,500,000              
Number of properties owned and operated | Property 4              
Number of lease renewal | Number         1      
Branch Office and Certain Equipment [Member]                
Lessee Lease Description [Line Items]                
Operating lease, renewal term   15 years     15 years      
Operating lease initial term         15 years      
Annual rent escalation percentage         2.50%      
Branch Office and Certain Equipment Expires in June 2039                
Lessee Lease Description [Line Items]                
Lease expiration month and year         2039-06      
Future lease payments   $ 8,300,000     $ 8,300,000      
Finance lease liability   1,500,000     1,500,000      
Sale-leaseback transaction resulted pre-tax gain       $ 2,500,000     $ 2,500,000  
Operating lease expense   $ 157,000 $ 232,000   $ 314,000 $ 364,000