Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt	$ 968,308	$ 993,654
Less: Current maturities	30,565	24,406
Long-term debt, net	937,743	969,248
Term Loan B
Debt Instrument [Line Items]
Total debt	405,231	406,335
Equipment financing and mortgages
Debt Instrument [Line Items]
Total debt	53,409	56,246
Other indebtedness
Debt Instrument [Line Items]
Total debt	12,911	7,829
2017 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Total debt	496,757	496,244
2020 Revolver
Debt Instrument [Line Items]
Total debt	$ 0	$ 27,000

Amount of debt and lease obligation, classified as current.

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