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Postretirement Benefits - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net amounts recognized at year end	$ 1,570	$ (131,239)	$ (208,770)	$ (182,233)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss (gain)	(4,497)	120,217
Prior service cost	7,569	8,647
Net amounts recognized at year end	$ 3,072	$ 128,864