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Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The components of net periodic benefit costs for the defined benefit plans and other postretirement benefits for the three and six months ended June 30, 2024 and 2023 are as follows:
 Pension BenefitsOther Benefits
Three months ended June 30,
 2024202320242023
Service cost$1,666 1,892 $166 160 
Interest cost3,613 3,557 295 317 
Expected return on assets(4,463)(4,069)(267)(217)
Amortization of actuarial (gain) loss
(18)554 (161)(88)
Amortization of prior service cost4 4 — — 
Total$802 1,938 $33 172 
 Pension BenefitsOther Benefits
Six months ended June 30,
 2024202320242023
Service cost$3,331 3,784 $332 320 
Interest cost7,226 7,115 591 634 
Expected return on assets(8,926)(8,138)(534)(434)
Amortization of actuarial (gain) loss
(35)1,108 (322)(176)
Amortization of prior service cost7 7 — — 
Total$1,603 3,876 $67 344