v3.26.1
Stock-Based Compensation, Restricted Share Plan (Details) - Restricted Stock [Member] - 2024 Directors Restricted Stock Plan - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
May 16, 2024
Stock-Based Compensation        
Total shares available for granting under plan 450,228     500,000
Restricted share activity        
Restricted shares outstanding at the beginning of the period (in shares) 17,068 16,520    
Shares vested and issued (in shares) (17,068)      
Restricted shares granted (in shares) 10,864 548    
Restricted shares outstanding at the end of the period (in shares) 10,864 17,068 16,520  
Fair value at grant date, restricted shares outstanding at the beginning of the period (in dollars per share) $ 88.47 $ 86.88    
Fair value of restricted shares vested and issued (in dollars per share) 88.47      
Fair value of restricted shares granted (in dollars per share) 132.06 136.25    
Fair value at grant date, restricted shares outstanding at the end of the period (in dollars per share) $ 132.06 $ 88.47 $ 86.88  
Weighted Average Remaining Amortization Term (in years) 10 months 17 days 1 month 17 days 4 months 13 days  
Total compensation cost related to non-vested restricted shares not yet recognized (in dollars) $ 1.3