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Note 11 - Long-Term Debt (Tables) | 6 Months Ended
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Jun. 30, 2014
Long-term Debt, Unclassified [Abstract] |
Schedule of Long-term Debt Instruments [Table Text Block] | The carrying value of our long-term debt at June 30, 2014 and December 31, 2013 was as follows:
(In thousands) |  | June 30, 2014 |  | December 31, 2013
5.375% | Senior Notes due 2015 | $ | — |  |  | $ | 54,481 |
9.000% | Senior Notes due 2017 | 192,096 |  |  | 191,611 |
3.000% | Convertible Senior Notes due 2017 (1) | 364,296 |  |  | 353,798 |
2.250% | Convertible Senior Notes due 2019 (2) | 336,005 |  |  | 330,182 |
5.500% | Senior Notes due 2019 | 300,000 |  |  | — |
| Total long-term debt | $ | 1,192,397 |  |  | $ | 930,072 |
_______________________
(1) | The principal amount of these notes is $450 million.
(2) | The principal amount of these notes is $400 million.
Schedule of Liability and Equity Components of Convertible Debt [Table Text Block] | The convertible notes are reflected on our condensed consolidated balance sheets as follows:
| Convertible Senior Notes due 2017 |  | Convertible Senior Notes due 2019 |
(In thousands) | June 30, 2014 |  | December 31, 2013 |  | June 30, 2014 |  | December 31, 2013 |
Liability component: |  |  |  |  |  |  |  |
Principal | $ | 450,000 |  |  | $ | 450,000 |  |  | $ | 400,000 |  |  | $ | 400,000 |  |
Less: debt discount, net (1) | (85,704 | ) |  | (96,202 | ) |  | (63,995 | ) |  | (69,818 | ) |
Net carrying amount | $ | 364,296 |  |  | $ | 353,798 |  |  | $ | 336,005 |  |  | $ | 330,182 |  |
Equity component (net of tax impact) (2) | $ | 65,679 |  |  | $ | 65,679 |  |  | $ | 77,026 |  | (3) | $ | 77,026 |  | (3)
__________________
(1) | Included within long-term debt and is being amortized over the life of the convertible notes.
(2) | Amount included within additional paid-in capital, net of the capped call transactions (Convertible Senior Notes due 2017) and related issuance costs (Convertible Senior Notes due 2017 and 2019).
(3) | There was no net tax impact recorded in equity related to the Convertible Senior Notes due 2019, as a result of our full valuation allowance.
Schedule of Interest Expense Recognized Related to Convertible Debt [Table Text Block] | The following tables set forth total interest expense recognized related to the convertible notes for the periods indicated:
| Convertible Senior Notes due 2017
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in thousands) | 2014 |  | 2013 |  | 2014 |  | 2013
Contractual interest expense | $ | 2,351 |  |  | $ | 3,375 |  |  | $ | 6,750 |  |  | $ | 6,750 |
Amortization of debt issuance costs | 304 |  |  | 287 |  |  | 604 |  |  | 570 |
Amortization of debt discount | 5,312 |  |  | 4,826 |  |  | 10,498 |  |  | 9,538 |
Total interest expense | $ | 7,967 |  |  | $ | 8,488 |  |  | $ | 17,852 |  |  | $ | 16,858 |
Effective interest rate of the liability component | 9.75 | % |  | 9.75 | % |  | 9.75 | % |  | 9.75 | %
| Convertible Senior Notes due 2019
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in thousands) | 2014 |  | 2013 |  | 2014 |  | 2013
Contractual interest expense | $ | 2,250 |  |  | $ | 2,250 |  |  | $ | 4,500 |  |  | $ | 2,925 |
Amortization of debt issuance costs | 319 |  |  | 308 |  |  | 635 |  |  | 400 |
Amortization of debt discount | 2,934 |  |  | 2,758 |  |  | 5,823 |  |  | 3,577 |
Total interest expense | $ | 5,503 |  |  | $ | 5,316 |  |  | $ | 10,958 |  |  | $ | 6,902 |
Effective interest rate of the liability component | 6.25 | % |  | 6.25 | % |  | 6.25 | % |  | 6.25 | %

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: 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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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