Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 904,834	$ 958,439
Less: Current maturities	28,040	70,285
Long-term debt, net	876,794	888,154
Term Loan B
Debt Instrument [Line Items]
Total debt	358,556	404,169
Less: Current maturities		44,000
Equipment financing and mortgages
Debt Instrument [Line Items]
Total debt	38,344	48,681
Other indebtedness
Debt Instrument [Line Items]
Total debt	9,812	8,300
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	0	0
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Total debt	$ 498,122	$ 497,289