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Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments | Long-term debt, principally to banks and noteholders, consists of:
(in thousands, except interest rates) | March 31, 2021 | December 31, 2020
Revolving credit agreement with borrowings outstanding at an end of period interest rate of 3.56% in 2021 and 3.50% in 2020 (including the effect of interest rate hedging transactions, as described below), due in 2024 | $ | 384,000 |  | $ | 398,000 |
Other debt, at an average end of period rate of 5.50% in both 2021 and 2020, due in varying amounts through 2021 | 2 |  | 9 |
Long-term debt | 384,002 |  | 398,009 |
Less: current portion | (2) |  | (9) |
Long-term debt, net of current portion | $ | 384,000 |  | $ | 398,000 |

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