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Pension Plan (Tables)
6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
Schedule of net benefit cost
Net periodic pension cost consists of the following: 

Three Months Ended June 30,Six Months Ended June 30,
 2022202120222021
Service cost$269 $248 $538 $496 
Interest cost on projected benefit obligation537 451 1,074 902 
Expected return on plan assets(1,324)(1,289)(2,648)(2,578)
Net amortization and deferral648 832 1,296 1,664 
Net periodic pension cost$130 $242 $260 $484