Benefit Plans - Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities	$ (89,998)	$ (121,597)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	6,422	0
Current liabilities	(2,782)	(2,760)
Noncurrent liabilities	(77,302)	(105,207)
Liabilities, net	(73,662)	(107,967)
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(139)	(133)
Noncurrent liabilities	(12,506)	(16,182)
Liabilities, net	$ (12,645)	$ (16,315)