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Long-Term Debt | 3 Months Ended
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Mar. 31, 2013
Long-Term Debt | Note 8: Long-Term Debt Our long-term debt consists of the following:
|  | March 31, |  |  | December 31, |
|  | 2013 |  |  | 2012 |
|  | (In Thousands) |
Working Capital Revolver Loan (A) |  | $ | — |  |  | $ | — |
Secured Term Loan (B) |  |  | 67,500 |  |  |  | 68,438 |
Secured Promissory Note (C) |  |  | 34,456 |  |  |  | — |
Other, with a current weighted-average interest rate of 6.82%, most of which is secured by machinery, equipment and real estate |  |  | 3,804 |  |  |  | 4,003 |
|  |  | 105,760 |  |  |  | 72,441 |
Less current portion of long-term debt |  |  | 11,304 |  |  |  | 4,798 |
Long-term debt due after one year |  | $ | 94,456 |  |  | $ | 67,643 |
(A) | Our wholly owned subsidiary, ThermaClime, LLC (“ThermaClime”) and its subsidiaries (collectively, the “Borrowers”) are parties to a $50 million revolving credit facility, as amended (the “Working Capital Revolver Loan”). The Working Capital Revolver Loan provides for advances based on specified percentages of eligible accounts receivable and inventories for ThermaClime and its subsidiaries. The Working Capital Revolver Loan matures on March 29, 2016, but could be extended to April 13, 2017, under certain conditions. The Working Capital Revolver Loan accrues interest at a base rate (generally equivalent to the prime rate) plus 0.50% if borrowing availability is greater than $25 million, otherwise plus 0.75% or, at our option, accrues interest at LIBOR plus 1.50% if borrowing availability is greater than $25 million, otherwise plus 1.75%. At March 31, 2013, the interest rate was 3.75% based on LIBOR. Interest is paid monthly, if applicable. As of March 31, 2013, the amount available for borrowing under the Working Capital Revolver Loan was approximately $48.4 million.
The Working Capital Revolver Loan is secured by the assets of all the ThermaClime entities other than El Dorado Nitric Company and its subsidiaries (“EDN”), but excluding the assets securing the Secured Term Loan, certain production equipment and facilities utilized by the Climate Control Business, and certain distribution-related assets of EDC. In addition, EDN is neither a borrower under, nor guarantor of, the Working Capital Revolver Loan. At March 31, 2013, the carrying value of the pledged assets was approximately $217 million. The Working Capital Revolver Loan also contains numerous covenants.
(B) | ThermaClime and certain of its subsidiaries are parties to a term loan agreement (the “Secured Term Loan”). The Secured Term Loan matures on March 29, 2016. The Secured Term Loan requires quarterly principal payments of approximately $0.9 million, plus interest and a final balloon payment of $56.3 million due on March 29, 2016. The stated interest rate on the Secured Term Loan includes a variable interest rate (based on three-month LIBOR plus 300 basis points, a rate that is adjusted quarterly) and a fixed interest rate as detailed below:
|  | March 31, 2013 |
|  | Stated Interest |  |  | Principal |
|  | Rate |  |  | Balance |
|  | (Dollars in Thousands) |
Variable interest rate |  |  | 3.28 | % |  | $ | 45,000 |
Fixed interest rate |  |  | 5.15 | % |  |  | 22,500 |
Weighted-average interest rate |  |  | 3.91 | % |  | $ | 67,500 |
The Secured Term Loan is secured by the real property and equipment located at our chemical production facilities located in the El Dorado Facility and in Cherokee, Alabama (the “Cherokee Facility”). The carrying value of the pledged assets is approximately $128 million at March 31, 2013. In addition, the Secured Term Loan is guaranteed by LSB. The Secured Term Loan borrowers are also subject to numerous covenants under the agreement. At March 31, 2013, the carrying value of the restricted net assets (including pledged assets) of ThermaClime and its subsidiaries was approximately $130 million. As defined in the agreement, the Secured Term Loan borrowers are also subject to a minimum fixed charge coverage ratio of not less than 1.10 to 1 and a maximum leverage ratio of not greater than 4.50 to 1. Both of these requirements are measured quarterly on a trailing twelve-month basis. The Secured Term Loan borrowers were in compliance with these financial covenants for the twelve-month period ended March 31, 2013. A prepayment premium equal to 1.0% of the principal amount prepaid is due to the lenders should the borrowers elect to prepay on or prior to March 29, 2014; however, this premium is eliminated thereafter.
(C) | On February 1, 2013, Zena Energy LLC (“Zena”), a subsidiary within our Chemical Business, entered into a loan (the “Secured Promissory Note”) with a lender in the original principal amount of $35 million. The Secured Promissory Note follows the acquisition by Zena of working interests (“Working Interests”) in certain natural gas properties during October 2012. The proceeds of the Secured Promissory Note effectively financed $35 million of the approximately $50 million purchase price of the Working Interests previously paid out of LSB’s working capital. The proceeds of the Secured Promissory Note are being used for general working capital purposes. The Secured Promissory Note matures on February 1, 2016. Principal and interest are payable monthly based on a five-year amortization at a defined LIBOR rate plus 300 basis points (but not below 3.00% per annum) with a final balloon payment of $15.3 million. The interest rate at March 31, 2013 was 3.28%. The loan is secured by the Working Interests and related properties and proceeds.

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- Definition The entire disclosure for long-term debt. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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