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Debt (Tables) | 6 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Schedule of Components of Long-term Debt | Long-term debt is comprised of the following:
|  | June 30, 2018 |  | December 31, 2017
10.75% senior secured notes due April 15, 2022 ($440.0 million face value less unamortized discount and fees of $9.2 million and $10.4 million at June 30, 2018 and December 31, 2017, respectively) |  | $ | 430.8 |  |  | $ | 429.6 |
5.50% convertible senior notes due March 1, 2021 ($213.5 million face value less unamortized discount and fees of $23.3 million and $27.2 million at June 30, 2018 and December 31, 2017, respectively) |  | 190.2 |  |  | 186.3 |
Capital leases |  | 6.8 |  |  | 7.5 |
Other debt |  | 20.5 |  |  | 21.3 |
Total |  | 648.3 |  |  | 644.7 |
Less – current maturities |  | 10.2 |  |  | 10.8 |
Total long-term debt |  | $ | 638.1 |  |  | $ | 633.9 |
See Note 10 for the fair value of the notes.
Schedule of Interest Expense | Interest expense related to the 2021 notes for the three and six month periods ended June 30, 2018 and 2017 was as follows:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Contractual interest coupon |  | $ | 3.0 |  |  | $ | 2.9 |  |  | $ | 5.9 |  |  | $ | 5.9 |
Amortization of debt discount |  | 1.6 |  |  | 1.5 |  |  | 3.2 |  |  | 2.9 |
Amortization of debt issuance costs |  | 0.3 |  |  | 0.3 |  |  | 0.6 |  |  | 0.6 |
Total |  | $ | 4.9 |  |  | $ | 4.7 |  |  | $ | 9.7 |  |  | $ | 9.4 |

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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://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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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