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Debt | 12 Months Ended
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Sep. 30, 2019
Debt |
Debt | 8. Debt Debt consists of the following at September 30, 2019 and 2018: ​
​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) |  | 2019 |  | 2018
Revolving credit facility, including current portion | ​ | $ | 286,261 |  | 220,000
Current portion of long-term debt | ​ |  | (21,261) |  | (20,000)
Total long-term debt, less current portion | ​ | $ | 265,000 |  | 200,000
​ On September 27, 2019, the Company entered into a new five-year credit facility (“the Credit Facility"), modifying its previous credit facility which would have matured December 21, 2020. The Credit Facility includes a $500 million revolving line of credit as well as provisions allowing for the increase of the credit facility commitment amount by an additional $250 million, if necessary, with the consent of the lenders. The bank syndication supporting the facility is comprised of a diverse group of eight banks led by JP Morgan Chase Bank, N.A., as Administrative Agent. The Credit Facility matures September 27, 2024. Interest on borrowings under the Credit Facility is calculated at a spread over either the London Interbank Offered Rate (LIBOR), the New York Federal Reserve Bank Rate or the prime rate, depending on various factors. The Credit Facility also requires a facility fee ranging from 10 to 25 basis points per annum on the unused portion. The interest rate spreads and the facility fee are subject to increase or decrease depending on the Company's leverage ratio. The Credit Facility is secured by the unlimited guaranty of the Company's direct and indirect material U.S. subsidiaries and the pledge of 100% of the equity interests of its direct and indirect material foreign subsidiaries. The financial covenants of the Credit Facility include a leverage ratio and an interest coverage ratio. As of September 30, 2019, the Company was in compliance with all covenants. At September 30, 2019, the Company had approximately $207 million available to borrow under the Credit Facility, plus the $250 million increase option, in addition to $61.8 million cash on hand. The Company classified $21.3 million as the current portion of long-term debt as of September 30, 2019, as the Company intends to repay this amount within the next twelve months; however, the Company has no contractual obligation to repay such amount during the next twelve months. During 2019 and 2018, the maximum aggregate short-term borrowings at any month-end were $308 million and $271 million, respectively, and the average aggregate short-term borrowings outstanding based on month-end balances were $236.4 million and $258.8 million, respectively. The weighted average interest rates were 3.21%, 3.03% and 2.09% for 2019, 2018 and 2017, respectively. The letters of credit issued and outstanding under the Credit Facility totaled $8.2 million and $7.8 million at September 30, 2019 and 2018, respectively.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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