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Note 3 - Long-term Debt Summary (Details) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
2014 Senior Credit Facility [Member] |  |
Long-term debt including current portion: |  |
Long-term Debt, Gross | $ 556,438,000 | $ 556,438,000
2020 Notes [Member] |  |
Long-term debt including current portion: |  |
Long-term Debt, Gross | 675,000,000 |
Unsecured Debt | 675,000,000 | 675,000,000
Unamortized net premium - 2020 Notes | 4,099,000 | 4,963,000
2014 Revolving Credit Facility [Member] |  |
Long-term debt including current portion: |  |
Long-term Debt, Gross | 556,400,000 |
Line of Credit Facility, Remaining Borrowing Capacity | 50,000,000 | 50,000,000
Long-term Debt, Gross | 1,231,438,000 |
Total outstanding principal | 1,231,438,000 | 1,231,438,000
Net carrying value | $ 1,235,537,000 | $ 1,236,401,000

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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