Pension and Other Postretirement Benefits - Summary of Accumulated Other Comprehensive Loss That Have Not Been Recognized as Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 39,995	$ 80,671
Net prior service cost	2,661	2,798
Total	42,656
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(1,770)	(436)
Net prior service cost	0	$ 0
Total	$ (1,770)