Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 899,745	$ 958,439
Less: current maturities	117,431	70,285
Long-term debt, net	782,314	888,154
Revolver
Debt Instrument [Line Items]
Total debt	0	0
Term Loan B
Debt Instrument [Line Items]
Total debt	357,744	404,169
Less: current maturities	91,000	44,000
Equipment financing and mortgages
Debt Instrument [Line Items]
Total debt	34,807	48,681
Other indebtedness
Debt Instrument [Line Items]
Total debt	8,784	8,300
2017 Senior Notes | 2017 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 498,410	$ 497,289