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DEBT (Tables) | 3 Months Ended
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Mar. 31, 2015
Debt Disclosure [Abstract] |
Long-Term Debt | Long-term debt consists of the following (in thousands):
|  | March 31, |  | December 31, |
|  | 2015 |  | 2014 |
Convertible senior notes |  | $ | 150,000 |  | $ | 150,000 |
Term loan credit agreement |  |  | 192,845 |  |  | 192,845 |
Industrial revenue bond |  |  | 1,522 |  |  | 1,645 |
|  | $ | 344,367 |  | $ | 344,490 |
Less: unamortized discount |  |  | (15,309) |  |  | (19,217) |
Less: current portion |  |  | (2,429) |  |  | (496) |
|  | $ | 326,629 |  | $ | 324,777 |
Equity and Liability Components of Notes | The following table summarizes information about the equity and liability components of the Notes (dollars in thousands). The fair value of the Notes outstanding were measured based on quoted market prices.
|  | March 31, |  | December 31, |
|  | 2015 |  | 2014 |
Principal amount of the Notes outstanding |  | $ | 150,000 |  | $ | 150,000 |
Unamortized discount of liability component |  |  | (14,362) |  |  | (15,399) |
Net carrying amount of liability component |  |  | 135,638 |  |  | 134,601 |
Less: current portion |  |  | - |  |  | - |
Long-term debt |  | $ | 135,638 |  | $ | 134,601 |
Carrying value of equity component, net of issuance costs |  | $ | 20,993 |  | $ | 20,993 |
Remaining amortization period of discount on the liability component |  |  | 3.1 years |  |  | 3.3 years |
Contractual Coupon Interest Expense and Accretion Of Discount On Liability | Contractual coupon interest expense and accretion of discount on the liability component for the Notes for the three month periods ended March 31, 2015 and 2014 were as follow (in thousands):
|  | Three Months Ended March 31, |
|  | 2015 |  | 2014 |
Contractual coupon interest expense |  | $ | 1,266 |  | $ | 1,266 |
Accretion of discount on the liability component |  | $ | 1,037 |  | $ | 968 |

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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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