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Long-Term Debt and Credit Facility | 9 Months Ended
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Sep. 30, 2014
Debt Disclosure [Abstract] |
Long-Term Debt | Debt and Credit Facility Senior Notes In May 2012, the Company issued $225.0 principal amount of 8.25% unsecured Senior Notes due June 1, 2020 (the “Senior Notes”) at 100% of the principal amount. Interest expense, including amortization of deferred financing costs, relating to the Senior Notes was $4.8 for each of the quarters ended September 30, 2014 and September 30, 2013, and $14.5 for each of the nine months ended September 30, 2014 and September 30, 2013. A portion of the interest relating to the Senior Notes was capitalized as Construction in progress. See Note 3 of Notes to Consolidated Financial Statements included in Part II, Item 8. “Financial Statements and Supplementary Data” in the Company’s Annual Report Form 10-K for the year ended December 31, 2013 for additional information regarding the Senior Notes. Cash Convertible Senior Notes Convertible Notes. In March 2010, the Company issued $175.0 principal amount of 4.50% unsecured Cash Convertible Senior Notes due April 1, 2015 (the “Convertible Notes”). The Convertible Notes are not convertible into the Company's common stock or any other securities, but instead will be settled in cash. The Company accounts for the cash conversion feature of the Convertible Notes as a separate derivative instrument (the “Bifurcated Conversion Feature”) with the fair value on the issuance date equaling the original issue discount for purposes of accounting for the debt component of the Convertible Notes. The following tables provide additional information regarding the Convertible Notes:
| September 30, 2014 |  | December 31, 2013
Principal amount | $ | 175.0 |  |  | $ | 175.0 |
Less: unamortized issuance discount | (4.8 | ) |  | (11.5 | )
Carrying amount, net of discount | $ | 170.2 |  |  | $ | 163.5 |
| Quarter Ended September 30, |  | Nine Months Ended September 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
Contractual coupon interest | $ | 2.0 |  |  | $ | 2.0 |  |  | $ | 5.9 |  |  | $ | 5.9 |
Amortization of discount | 2.3 |  |  | 2.0 |  |  | 6.7 |  |  | 6.0 |
Amortization of deferred financing costs | 0.3 |  |  | 0.3 |  |  | 0.9 |  |  | 0.9 |
Total interest expense 1 | $ | 4.6 |  |  | $ | 4.3 |  |  | $ | 13.5 |  |  | $ | 12.8 |
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1 | A portion of the interest relating to the Convertible Notes was capitalized as Construction in progress.
The Convertible Notes’ conversion rate is subject to adjustment based on the occurrence of certain events, including, but not limited to, the payment of quarterly cash dividends on the Company’s common stock in excess of $0.24 per share. As of September 30, 2014, the conversion rate was 20.8862 shares per $1,000 principal amount of the Convertible Notes and the equivalent conversion price was approximately $47.88 per share, reflecting cumulative adjustments for quarterly dividends paid in excess of $0.24 per share. Holders may convert their Convertible Notes at any time on or after January 1, 2015 and, in certain limited circumstances, before January 1, 2015. Pursuant to one of the early conversion provisions, if the Company's closing stock price exceeds 130% of the conversion price for 20 trading days during the final 30 consecutive trading days of a quarter, holders may convert the Convertible Notes during the following quarter. An immaterial amount of Convertible Notes was presented for conversion during the second and third quarters of 2014 pursuant to this provision. Because this provision was also triggered at September 30, 2014, holders may present Convertible Notes for early conversion during the fourth quarter of 2014. The carrying amount of the Convertible Notes, net of discount, was included in the Consolidated Balance Sheet as Current portion of long-term debt as of September 30, 2014. Convertible Note Hedge Transactions. In March 2010, the Company purchased cash-settled call options (the “Call Options”) that have an exercise price equal to the conversion price of the Convertible Notes and an expiration date that is the same as the maturity or on the earlier conversion date of the Convertible Notes. If the Company exercises the Call Options, the aggregate amount of cash it would receive from the counterparties to the Call Options would cover the aggregate amount of cash that the Company would be required to pay to the holders of the converted Convertible Notes, less the principal amount thereof. Contemporaneous with the purchase of the Call Options, the Company also sold net-share-settled warrants (the “Warrants”) which are exercisable on a prorated basis for 120 trading days commencing July 1, 2015 relating to approximately 3.7 million shares of the Company’s common stock. The Call Option and the Warrants have anti-dilution provisions substantially similar to the Convertible Notes. At September 30, 2014, the exercise prices were $47.88 per share and $60.80 per share for the Call Options and the Warrants, respectively, reflecting cumulative adjustments for quarterly dividends paid in excess of $0.24 per share. See Note 3 of Notes to Consolidated Financial Statements included in Part II, Item 8. “Financial Statements and Supplementary Data” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 for additional information regarding the Convertible Notes, the Call Options and the Warrants. See “Fair Values of Financial Assets and Liabilities - All Other Financial Assets and Liabilities” in Note 9 for information relating to the estimated fair value of the Senior Notes and Convertible Notes. Revolving Credit Facility The Company’s credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the other financial institutions party thereto (the “Revolving Credit Facility”) provides the Company with a $300.0 funding commitment through September 30, 2016. The Company had $271.0 of borrowing availability under the Revolving Credit Facility at September 30, 2014, based on the borrowing base determination then in effect. At September 30, 2014, there were no borrowings under the Revolving Credit Facility and $7.7 was being used to support outstanding letters of credit, leaving $263.3 of net borrowing availability. The interest rate applicable to any overnight borrowings under the Revolving Credit Facility would have been 4.0% at September 30, 2014. See Note 3 of Notes to Consolidated Financial Statements included in Part II, Item 8. “Financial Statements and Supplementary Data” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 for additional information regarding the Revolving Credit Facility.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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