v3.26.1
Benefit Plan (Components Of Net Periodic Benefit Expense) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 1,607,000 $ 1,632,000
Interest cost 1,570,000 1,478,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) (885,000) (712,000)
Pension plan contributions 0 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost 1,607,000 1,632,000
Interest cost 1,570,000 1,478,000
Expected return on plan assets (4,035,000) (3,834,000)
Recognized net actuarial loss (27,000) 12,000
Benefit expense (885,000) (712,000)
Supplemental Employee Retirement Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 201,000 194,000
Interest cost 210,000 182,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 411,000 376,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost 201,000 194,000
Interest cost 210,000 182,000
Benefit expense $ 411,000 $ 376,000