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Stock Options and Stock Appreciation Rights - SARs (Details) - USD ($)
 12 Months Ended
Apr. 18, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
SARs        
SARs fully vested and exercisable   22,435    
Stock Appreciation Rights (SARs)        
Stock option details        
Shares available for future grants 750,000      
Maximum exercisable period for granted share-based compensation 10 years      
Number of rights issued   8,000    
Base value of units issued (per unit)   $ 53.91    
Vesting period 8 years      
SARs        
Outstanding beginning balance   465,250    
Granted   8,000    
Exercised   (2,548)    
Forfeited   (14,000)    
Outstanding ending balance   456,702 465,250  
Weighted average exercise price        
Weighted average exercise price, beginning balance (per share)   $ 39.35    
Weighted average exercise price, granted (per share)   53.91    
Weighted average exercise price, exercised (per share)   39.33    
Weighted average exercise price, forfeited (per share)   39.33    
Weighted average exercise price, ending balance (per share)   39.61 $ 39.35  
SARs Weighted average exercise price   $ 39.35    
Aggregate intrinsic value        
Aggregate intrinsic value   $ 10,757,000    
SAR Aggregate intrinsic value   $ 534,000    
Weighted average remaining contractual term (years)   7 years 6 months 14 days    
SAR Weighted average remaining contractual term (years)   7 years 6 months    
Fair Value of Liability   $ 4,540,000 $ 1,464,000  
Stock-based compensation expense   3,144,000 $ 918,000 $ 546,000
Stock-based compensation cost, unrecognized   $ 8,309,000    
Stock-based compensation cost, unrecognized, weighted-average period of recognition   7 years 6 months