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Pension Plan
 3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
Pension Plan Pension Plan
Net periodic pension cost consists of the following: 

Three Months Ended March 31,
 20222021
Service cost$269 $248 
Interest cost on projected benefit obligation537 451 
Expected return on plan assets(1,324)(1,289)
Net amortization and deferral648 832 
Net periodic pension cost$130 $242 
 
We do not expect to make any pension contributions during 2022. Non-service pension cost/(benefit) was immaterial for the three months ended March 31, 2022 and 2021.