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Note 12 - Condensed Consolidating Financial Information (Details Textual) | Jun. 30, 2019 | Dec. 31, 2018
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Equity Method Investment, Ownership Percentage | 100.00% |
Senior Notes [Member] | Senior Notes 6.875% Due 2023 [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.875% | 6.875%
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%

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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=6877327&loc=d3e13212-122682 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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