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Pension Plans and Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Domestic and Foreign Pension and Postretirement Defined Benefit Plans
The components of pension and postretirement benefits cost (credit) for the three-month and six-month periods ended June 30, 2024 and 2023 were as follows (in thousands):
Three Months Ended
June 30,		Six Months Ended
June 30,
2024202320242023
Pension Benefits Cost (Credit):
Service cost$1,563 $1,334 $3,129 $2,655 
Interest cost8,140 8,558 16,285 17,100 
Expected return on assets(8,838)(8,415)(17,668)(16,824)
Amortization of prior service benefit19 21 39 41 
Total net pension benefits cost$884 $1,498 $1,785 $2,972 
Postretirement Benefits Cost:
Service cost$11 $12 $23 $24 
Interest cost361 469 721 937 
Total net postretirement benefits cost$372 $481 $744 $961 
Total net pension and postretirement benefits cost$1,256 $1,979 $2,529 $3,933