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Retirement Plans (Tables)
6 Months Ended
Jun. 30, 2023
Retirement Benefits [Abstract]  
Components Of Net Periodic Pension Cost (Income)
The components of net periodic pension cost (income) of the UK Plan for the three and six months ended June 30, 2023 and 2022 were as follows (in thousands): 
 For the three months ended
June 30,
For the six months ended
June 30,
 2023202220232022
Interest cost$2,451 $1,452 $4,827 $2,981 
Expected return on plan assets(2,878)(3,082)(5,669)(6,326)
Amortization of unrecognized loss658 528 1,297 1,084 
Net periodic pension cost (income)$231 $(1,102)$455 $(2,261)