Annual report [Section 13 and 15(d), not S-K Item 405]

Accounting for Share-Based Payments - Narrative (Details)

v3.25.4
Accounting for Share-Based Payments - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares authorized for grant (in shares) 800,000  
Shares remaining available for grants (in shares) 400,000  
Share-based compensation expense $ 1,300,000 $ 800,000
Total unrecognized share-based compensation expense 1,000,000.0  
Expected share based compensation expense in 2026 600,000  
Expected share based compensation expense thereafter $ 400,000  
Weighted-average period for recognition (in years) 2 years 4 months 2 days  
Compensation expense $ 1,302,000 $ 760,000
Non Employee Director | Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average period for recognition (in years) 5 months 23 days  
Noninterest expense directors fees $ 115,000  
Maximum annual retainer percent 100.00%  
Vesting period (in years) 1 year  
Stock issued, restricted stock award (in shares) 13,498  
Stock issued, restricted stock award value $ 200,000  
Non Employee Director | Restricted Stock | Audit Committee    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Noninterest expense directors fees 10,000  
Non Employee Director | Restricted Stock | Compensation Committee    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Noninterest expense directors fees 7,500  
Non Employee Director | Restricted Stock | Nominating and Corporate Governance Committee    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Noninterest expense directors fees 6,000  
Maximum | Non Employee Director | Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Noninterest expense directors fees $ 30,000  
Stock Options | 2011 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stok option, term (in years) 10 years  
Period after grant date, awards vesting begins (in years) 1 year  
Compensation expense $ 0  
Stock Options | 2011 Plan | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 20.00%  
Stock Options | 2011 Plan | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 33.00%  
Restricted Stock Awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average grant-date fair value (in dollars per share) $ 12.72  
Granted (in shares) 69,448  
Performance stock vested (in shares) 11,590  
Restricted Stock Awards | 2015 Stock Awards Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average period for recognition (in years) 2 years 6 months 10 days  
Period after grant date, awards vesting begins (in years) 1 year  
Restricted Stock Awards | 2015 Stock Awards Plan | Tranche I    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 33.00%  
Restricted Stock Awards | 2015 Stock Awards Plan | Tranche II    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 33.00%  
Restricted Stock Awards | 2015 Stock Awards Plan | Tranche II    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 33.00%  
Performance Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average period for recognition (in years) 2 years 3 months 7 days  
Target period for vesting (in years) 3 years  
Performance Stock Units | Tranche I    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Performance stock vested (in shares) 11,589  
Performance Stock Units | Tranche II    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Performance stock vested (in shares) 11,588  
Performance Stock Units | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 0.00%  
Performance Stock Units | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting rights, percentage 150.00%  
Performance Stock Unit With Performance Conditions    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average grant-date fair value (in dollars per share) $ 12.44  
Granted (in shares) 69,541 0
Performance Stock Units With Market Condition    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average grant-date fair value (in dollars per share)   $ 2.61
Granted (in shares) 0  
Performance stock vested (in shares) 11,590 0