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Pension Plans and Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2023
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, 2023 and 2022 were as follows (in thousands):
Three Months Ended
June 30,		Six Months Ended
June 30,
2023202220232022
Pension Benefits Cost (Credit):
Service cost$1,334 $970 $2,655 $1,955 
Interest cost8,558 5,568 17,100 11,173 
Expected return on assets(8,415)(10,932)(16,824)(22,144)
Amortization of prior service benefit21 23 41 47 
Total net pension benefits cost (credit)$1,498 $(4,371)$2,972 $(8,969)
Postretirement Benefits Cost:
Service cost$12 $22 $24 $43 
Interest cost469 326 937 653 
Total net postretirement benefits cost$481 $348 $961 $696 
Total net pension and postretirement benefits cost (credit)$1,979 $(4,023)$3,933 $(8,273)