Retirement Benefits - Schedule of Periodic Benefit Costs (Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Retirement Benefits [Abstract]
Current service costs	$ 1,320	$ 2,046	$ 2,684	$ 4,173
Interest expense	323	374	656	761
Actuarial gain	(2,446)	(2,547)	(4,970)	(5,179)
Net periodic benefit income	$ (803)	$ (127)	$ (1,630)	$ (245)