Employee Benefits - Summary of Components of Net Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Components of net periodic benefit cost:
Service cost	$ 6,338	$ 8,092	$ 12,677	$ 16,184
Interest cost	4,298	2,430	8,596	4,860
Expected return on plan assets	(7,532)	(9,281)	(15,064)	(18,562)
Prior service credit	(2,970)	(2,970)	(5,940)	(5,940)
Recognized net actuarial loss	2,468	2,798	4,936	5,596
Net periodic benefit cost	$ 2,602	$ 1,069	$ 5,205	$ 2,138