Quarterly report pursuant to Section 13 or 15(d)

Pension Plans (Details)

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Pension Plans (Details) - USD ($)
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Pension Plans [Line Items]      
Interest cost   $ 62,000  
Pension Plan [Member]      
Pension Plans [Line Items]      
Projected benefit obligation, amount     $ 18,600,000
Fair value of plan assets     18,500,000
Underfunded amount     100,000
Net periodic expense $ 13,000 39,000  
Interest cost 222,000    
Service cost 67,000 248,000  
Expected return on plan assets 276,000 225,000  
Postretirement Life Insurance [Member]      
Pension Plans [Line Items]      
Projected benefit obligation, amount     $ 4,300,000
Net periodic expense 54,000 36,000  
Interest cost 49,000 46,000  
Service cost $ 5,000 3,000  
Expected return on plan assets   $ 13,000