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Debt (Tables) | 6 Months Ended
--- | ---
Mar. 31, 2019
Debt Disclosure [Abstract] |
Interest Rate Contracts | The following table presents information related to interest rate contracts entered into by the Company and designated as cash flow hedges:
|  | March 31, 2019 |  | September 30, 2018
Pay fixed swaps - notional amount |  | $ | 331,250 |  |  | $ | 343,750 |
Net unrealized gain |  | $ | 4,791 |  |  | $ | 11,309 |
Weighted-average maturity period (years) |  | 2.2 |  |  | 2.7 |
Weighted-average received rate |  | 2.49 | % |  | 2.26 | %
Weighted-average pay rate |  | 1.40 | % |  | 1.37 | %
Interest Rate Swap Contracts as Reflected on Balance Sheet | At March 31, 2019 and September 30, 2018, the interest rate swap contracts were reflected in the Consolidated Balance Sheets as follows:
Derivatives |  | March 31, 2019 |  | September 30, 2018
Current assets: |  |  |  |
Other current assets |  | $ | 2,085 |  |  | $ | 3,867 |
Long-term assets: |  |  |  |  |  |
Other assets |  | 2,706 |  |  | 7,442 |
Current liabilities: |  |  |  |  |  |
Other current liabilities |  | — |  |  | — |
Long-term liabilities: |  |  |  |  |  |
Other liabilities |  | — |  |  | — |
Total derivatives |  | $ | 4,791 |  |  | $ | 11,309 |
Gain (Loss) on Derivatives | The gains recognized on derivatives were as follows:
| Derivatives in Cash Flow Hedging Relationships |  | Location of Gain Recognized in Income on Derivative |  | Amount of Gain Recognized in Income on Derivatives |  | Amount of Gain Recognized in Income on Derivatives
|  |  |  |  | Three Months Ended March 31, |  | Six Months Ended March 31,
|  |  |  |  | 2019 |  | 2018 |  | 2019 |  | 2018
| Interest rate swaps |  | Interest expense |  | $ | 880 |  |  | $ | 202 |  |  | $ | 1,615 |  |  | $ | 265 |
The Company recognized the following (losses) gains in AOCI:
Derivatives in Cash Flow Hedging Relationships |  | Amount of (Loss) Gain Recognized in AOCI on Derivatives |  | Location of Gain Reclassified From AOCI into Income (Effective Portion*) |  | Amount of Gain Reclassified from AOCI into Income (Effective Portion*)
|  | March 31, 2019 |  | March 31, 2018 |  |  |  | March 31, 2019 |  | March 31, 2018
Interest rate swaps |  | $ | (3,702 | ) |  | $ | 4,893 |  |  | Interest expense |  | $ | 1,219 |  |  | $ | 171 |
*There is no ineffective portion or amount excluded from effectiveness testing.

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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