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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit Plans
We sponsor a noncontributory defined benefit pension plan and non-qualified Supplemental Executive Retirement Plans ("SERPs"). The accrual for future benefits has been frozen in our defined benefit pension plan and SERPs.

We sponsor a defined contribution plan covering substantially all non-union and certain union employees. We match a portion of employees' voluntary contributions to this plan.
Other union-represented employees are covered by defined benefit pension plans jointly sponsored by us and the union, or by union-sponsored multi-employer plans.

The components of the employee benefit plan expense consisted of the following:
 Three Months Ended 
September 30,		Nine Months Ended 
September 30,
(in thousands)2025202420252024
Interest cost$5,650 $5,628 $16,948 $16,833 
Expected return on plan assets, net of expenses(5,558)(6,018)(16,675)(18,054)
Amortization of actuarial loss and prior service cost4 5 13 14 
Total for defined benefit pension plan96 (385)286 (1,207)
SERPs242 233 727 701 
Defined contribution plan3,586 3,845 11,967 12,786 
Net periodic benefit cost$3,924 $3,693 $12,980 $12,280 

We contributed $1.0 million to fund current benefit payments for our SERPs during the nine months ended September 30, 2025. During the remainder of 2025, we anticipate contributing an additional $0.5 million to fund the SERPs' benefit payments. We have met regulatory funding requirements for our qualified benefit pension plan and do not have a mandatory contribution in 2025.