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Employee Benefit Plans (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Pension Plan    
Employee benefit plans    
Contribution made by the entity under the pension plan $ 52,000 $ 44,000
401 (k) Plan    
Employee benefit plans    
Matching contribution by employer as a percentage of the employee's deferral 100.00%  
Matching contribution by employer as a percentage of U.S. employee's qualifying compensation 6.00%  
Statutorily prescribed annual limit of contributions made by an employee before attaining age of 50 years $ 22,500  
Statutorily prescribed annual limit of contributions made by an employee after attaining age of 50 years $ 30,000  
Specified age limit of employees for calculation of statutorily prescribed annual limit of contribution 50 years  
Contribution made by the entity under the 401(k) Plan $ 103,000 $ 95,000