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Derivative Financial Instruments (Tables) | 6 Months Ended
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Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of fair value of derivatives designated as hedging instruments | The fair values of our outstanding derivatives designated as hedging instruments were as follows:
|  |  | Fair Value of Derivative Instruments as of
| Balance Sheet Location |  | March 31, 2019 |  | September 30, 2018
|  |  | (in thousands)
Interest rate swap agreements | Other current (liabilities) assets |  | $ | (5,530 | ) |  | $ | 1,244 |

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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
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