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Note 4 - Long-term Debt (Details Textual) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Oct. 19, 2020 | Dec. 31, 2019
Interest Paid, Excluding Capitalized Interest, Operating Activities | $ 127,000 | $ 134,000 |  |
Interest Costs Capitalized | $ 0 | $ 0 |  |
2024 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.125% |  |  | 5.125%
2026 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.875% |  |  | 5.875%
2027 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.00% |  |  | 7.00%
The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.70% |  |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.40% |  |  |
The 2030 Notes [Member] | Subsequent Event [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 4.75% |
Debt Instrument, Face Amount |  |  | $ 800,000 |

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