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Pension Plan
 9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Pension Plan Pension Plan
Net periodic pension cost consists of the following: 

Three Months Ended September 30,Nine Months Ended September 30,
 2022202120222021
Service cost$269 $248 $807 $744 
Interest cost on projected benefit obligation537 451 1,611 1,353 
Expected return on plan assets(1,324)(1,289)(3,972)(3,867)
Net amortization and deferral647 832 1,941 2,496 
Net periodic pension cost$129 $242 $387 $726 
 
We do not expect to make any pension contributions during 2022. Non-service pension cost/(benefit) was immaterial for the three and nine months ended September 30, 2022 and 2021.