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Retirement Plans
 6 Months Ended
Jun. 30, 2021
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plans
We have a noncontributory, unfunded retirement plan for certain retirees in the United States. Certain of our foreign subsidiaries also have defined benefit pension plans covering substantially all of their respective teammates.
The components of net periodic benefit cost for the three and six months ended June 30, 2021 and 2020 were as follows:
Three Months Ended
 June 30,		Six Months Ended
 June 30,
2021202020212020
Service cost$709 $357 $1,413 $708 
Interest cost448 496 894 990 
Recognized net actuarial loss354 214 707 428 
Net periodic benefit cost$1,511 $1,067 $3,014 $2,126