Pension Plans - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Retirement Benefits [Abstract]
Service cost	$ 4,760	$ 6,548	$ 15,266	$ 20,083
Interest cost	1,131	1,199	3,593	3,682
Expected return on plan assets	(1,339)	(1,384)	(4,260)	(4,247)
Recognized actuarial loss	13	32	39	96
Net periodic pension cost	$ 4,565	$ 6,395	$ 14,638	$ 19,614