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Pension Plans (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Retirement Benefits [Abstract]        
Net service cost $ (1,020) $ (1,107) $ (2,090) $ (2,216)
Interest cost (263) (166) (539) (332)
Expected return on plan assets 164 109 336 217
Administrative charges (67) (72) (140) (143)
Net periodic pension cost $ (1,186) $ (1,236) $ (2,433) $ (2,474)