Employee Benefit Plans - Components of Net Periodic Benefit Income for the Pension Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 1,727	$ 1,494
Interest cost	25,365	26,117
Expected return on plan assets	(44,404)	(41,240)
Amortization of prior service cost	281	173
Amortization of actuarial loss	3,567	2,341
Net periodic benefit income	$ (13,464)	$ (11,115)