Employee Benefit Plans - Schedule of net benefit credit (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 11	$ 1,533	$ 22	$ 3,067
Expected return on plan assets	0	(1,518)		(3,036)
Amortization of prior service credits	$ 0	$ (36)		$ (73)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)
Amortization of other actuarial (gains)	$ (22)	$ (195)	$ (44)	$ (390)
Net benefit credit	(11)	(216)	(22)	(432)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	50	57	99	115
Interest cost	605	673	1,210	1,347
Amortization of other actuarial (gains)	$ (1,981)	$ (2,423)	$ (3,962)	$ (4,845)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)
Net benefit credit	$ (1,326)	$ (1,693)	$ (2,653)	$ (3,383)