Financial Instruments (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt	$ 362,194	$ 456,885
Less: Current maturities of long-term debt	555	4,218
Long-term debt	361,639	452,667
Line of Credit
Debt Instrument [Line Items]
Long-term debt	$ 360,000	$ 446,000
Interest rate, effective percentage	2.50%	3.49%
Foreign bank debt
Debt Instrument [Line Items]
Long-term debt	$ 2,194	$ 10,885