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Note 11 - Condensed Consolidating Financial Information (Details Textual) | Mar. 31, 2020 | Dec. 31, 2019
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Subsidiary [Member] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 100.00% | 100.00%
Senior Notes [Member] | Senior Notes 6.375% Due 2026 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.375% | 6.375%
Senior Notes [Member] | Senior Notes 6.000% Due 2026 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.00% | 6.00%
Senior Notes [Member] | The 4.750% Senior NotesDue December 2027 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.75% | 4.75%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Details
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