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DEBT | 12 Months Ended
--- | ---
Sep. 30, 2017
DEBT |
DEBT | NOTE 4 DEBT At September 30, 2017 and 2016, we had the following unsecured long-term debt outstanding at rates and maturities shown in the following table:
|  |  |  |  |  |  |  | Unamortized Discount and |
|  | Principal |  | Debt Issuance Costs |
|  | September 30, |  | September 30, |  | September 30, |  | September 30, |
|  | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | (in thousands) |
Unsecured senior notes issued March 19, 2015: |  |  |  |  |  |  |  |  |  |  |  |  |
Due March 19, 2025 |  | $ | 500,000 |  | $ | 500,000 |  | $ | (7,098) |  | $ | (8,153) |
|  |  | 500,000 |  |  | 500,000 |  |  | (7,098) |  |  | (8,153) |
Less long-term debt due within one year |  |  | — |  |  | — |  |  | — |  |  | — |
Long-term debt |  | $ | 500,000 |  | $ | 500,000 |  | $ | (7,098) |  | $ | (8,153) |
On March 19, 2015, we issued $500 million of 4.65 percent 10-year unsecured senior notes. Interest is payable semi-annually on March 15 and September 15. The debt discount is being amortized to interest expense using the effective interest method. The debt issuance costs are amortized straight-line over the stated life of the obligation, which approximates the effective interest method. We have a $300 million unsecured revolving credit facility which will mature on July 13, 2021. The credit facility has $75 million available to use as letters of credit. The majority of any borrowings under the facility would accrue interest at a spread over the London Interbank Offered Rate (LIBOR). We also pay a commitment fee based on the unused balance of the facility. Borrowing spreads as well as commitment fees are determined according to a scale based on a ratio of our total debt to total capitalization. The spread over LIBOR ranges from 1.125 percent to 1.75 percent per annum and commitment fees range from .15 percent to .30 percent per annum. Based on our debt to total capitalization on September 30, 2017, the spread over LIBOR and commitment fees would be 1.125 percent and .15 percent, respectively. There is one financial covenant in the facility which requires us to maintain a funded leverage ratio (as defined) of less than 50 percent. The credit facility contains additional terms, conditions, restrictions and covenants that we believe are usual and customary in unsecured debt arrangements for companies of similar size and credit quality including a limitation that priority debt (as defined in the agreement) may not exceed 17.5% of the net worth of the Company. As of September 30, 2017, there were no borrowings, but there were three letters of credit outstanding in the amount of $38.8 million. At September 30, 2017, we had $261.2 million available to borrow under our $300 million unsecured credit facility. Subsequent to September 30, 2017, the Company increased one of the three letters of credit by $0.5 million, which reduced availability under the facility to $260.7 million. Subsequent to September 30, 2017, the Company entered into a $12 million unsecured standalone line of credit facility, which is purposed for the issuance of bid and performance bonds, as needed, for international operations. The Company currently has two bonds issued under this line for a total value of approximately $5.4 million. The applicable agreements for all unsecured debt contain additional terms, conditions and restrictions that we believe are usual and customary in unsecured debt arrangements for companies that are similar in size and credit quality. At September 30, 2017, we were in compliance with all debt covenants. At September 30, 2017, aggregate maturities of long-term debt are as follows (in thousands):
Years ending September 30, |  |  |  |
2018 |  | $ | — |
2019 |  |  | — |
2020 |  |  | — |
2021 |  |  | — |
2022 |  |  | — |
Thereafter |  | $ | 500,000 |
|  | $ | 500,000 |

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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 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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