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Debt and Credit Facility | 3 Months Ended
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Mar. 31, 2016
Debt Disclosure [Abstract] |
Debt and Credit Facility | Debt and Credit Facility Senior Notes In May 2012, we issued $225.0 million principal amount of 8.25% unsecured senior notes due June 1, 2020 ("Senior Notes") at 100% of the principal amount. During 2015, we repurchased $27.2 million aggregate principal amount of our Senior Notes for 107.5% of the face value. As of both March 31, 2016 and December 31, 2015, $197.8 million aggregate principal amount of our Senior Notes remained outstanding. Interest expense, including amortization of deferred financing costs, relating to the Senior Notes was $4.3 million and $4.8 million for the quarters ended March 31, 2016 and March 31, 2015, respectively. A portion of the interest relating to the Senior Notes was capitalized as construction in progress. We may redeem the Senior Notes at our option in whole or part at any time on or after June 1, 2016 at a redemption price of 104.125% of the principal amount, declining to 102.0625% of the principal amount on or after June 1, 2017 and declining further to 100% of the principal amount on or after June 1, 2018, in each case plus any accrued and unpaid interest. The fair value of the outstanding Senior Notes at March 31, 2016 and December 31, 2015 was approximately $205.7 million and $207.3 million, respectively. See Note 9 for information relating to the estimated fair value of the Senior Notes. Revolving Credit Facility Our credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the other financial institutions party thereto ("Revolving Credit Facility") provides us with a $300.0 million funding commitment through December 2020. We had $299.1 million of borrowing availability under the Revolving Credit Facility at March 31, 2016, based on the borrowing base determination then in effect. At March 31, 2016, there were no borrowings under the Revolving Credit Facility and $7.3 million was being used to support outstanding letters of credit, leaving $291.8 million of net borrowing availability. The interest rate applicable to any overnight borrowings under the Revolving Credit Facility would have been 3.75% at March 31, 2016.

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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 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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