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Note 8 - Fair Value Measurements - Long-Term Debt (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] |  |
Long-term debt | $ 600,000 |
Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 588,298 |
Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 625,500 |
Fair Value, Nonrecurring [Member] |  |
Long-term debt | 4,976,344 | $ 3,813,956
Fair Value, Nonrecurring [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 4,920,882 | 3,765,931
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 4,724,504 | 3,962,918
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] |  |
Long-term debt | 1,925,887 | 1,305,634
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 1,912,892 | 1,290,708
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 1,873,297 | 1,308,846
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.375% Due 2026 [Member] | Senior Notes [Member] |  |
Long-term debt | 750,000 | 750,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.375% Due 2026 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 742,391 | 741,729
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.375% Due 2026 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 712,500 | 806,250
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.000% Due 2026 [Member] | Senior Notes [Member] |  |
Long-term debt | 700,000 | 700,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.000% Due 2026 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 691,454 | 690,756
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes 6.000% Due 2026 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 652,750 | 750,750
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member] |  |
Long-term debt | 1,000,000 | 1,000,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 985,390 | 984,416
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 860,000 | 1,038,750
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] |  |
Long-term debt | 457 | 58,322
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 457 | 58,322
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | $ 457 | $ 58,322

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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
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