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Pension and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
Pension and other postretirement benefits expenses consisted of the following:
Three Months Ended
March 31,
Pensions20222021
Service cost$1,555 $1,741 
Interest cost3,434 3,172 
Expected return on plan assets(7,281)(6,972)
Amortization of prior service cost108 85 
Amortization of actuarial losses3,139 3,926 
Special termination benefits136 — 
Net periodic benefit cost$1,091 $1,952 

Three Months Ended
March 31,
Other Postretirement Benefits20222021
Service cost$24 $25 
Interest cost206 206 
Amortization of prior service cost— 7 
Amortization of actuarial losses9 70 
Net periodic benefit cost$239 $308 
The service cost component of net periodic benefit cost is included within cost of sales and selling and administrative expenses. The components of net periodic benefit cost other than the service cost component are included in Other income (expense) on the Consolidated Statements of Income.