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Pension Plan
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Pension Plan Pension Plan
Net periodic pension cost consists of the following: 

Three Months Ended June 30,Six Months Ended June 30,
 2024202320242023
Service cost$180 $194 $360 $388 
Interest cost on projected benefit obligation863 911 1,726 1,822 
Expected return on plan assets(1,101)(1,032)(2,202)(2,064)
Net amortization and deferral398 532 797 1,064 
Net periodic pension cost$340 $605 $681 $1,210 
 
We do not expect to make any pension contributions during 2024. Non-service pension cost was immaterial for the three and six months ended June 30, 2024 and 2023.