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Pension Settlement
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Pension Settlement Pension Settlement
In the first quarter of 2023, there was a $9.2 million charge in relation to the sale of the U.S. pension plan liability to an insurer, which included $2.3 million cash and $6.9 million in relation to the derecognition of the U.S. pension liability and reallocation of accumulated actuarial losses from other comprehensive income. This was partially offset by a $0.3 million defined benefit credit on the U.K. pension plan.