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Debt (Tables) | 3 Months Ended
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Dec. 31, 2018
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:
|  | December 31, 2018 |  | September 30, 2018
Pay fixed swaps - notional amount |  | $ | 337,500 |  |  | $ | 343,750 |
Net unrealized gain |  | $ | 7,467 |  |  | $ | 11,309 |
Weighted-average maturity period (years) |  | 2.5 |  |  | 2.7 |
Weighted-average received rate |  | 2.50 | % |  | 2.26 | %
Weighted-average pay rate |  | 1.38 | % |  | 1.37 | %
Interest Rate Swap Contracts as Reflected on Balance Sheet | At December 31, 2018 and September 30, 2018, the interest rate swap contracts were reflected in the Consolidated Balance Sheets as follows:
Derivatives |  | December 31, 2018 |  | September 30, 2018
Current assets: |  |  |  |
Other current assets |  | $ | 2,853 |  |  | $ | 3,867 |
Long-term assets: |  |  |  |  |  |
Other assets |  | 4,614 |  |  | 7,442 |
Current liabilities: |  |  |  |  |  |
Other current liabilities |  | — |  |  | — |
Long-term liabilities: |  |  |  |  |  |
Other liabilities |  | — |  |  | — |
Total derivatives |  | $ | 7,467 |  |  | $ | 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
|  |  |  |  | Three Months Ended December 31,
|  |  |  |  | 2018 |  | 2017
| Interest rate swaps |  | Interest expense |  | $ | 735 |  |  | $ | 63 |
Note 6. Debt (continued) 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*)
|  | December 31, 2018 |  | December 31, 2017 |  |  |  | December 31, 2018 |  | December 31, 2017
Interest rate swaps |  | $ | (2,346 | ) |  | $ | 1,633 |  |  | Interest expense |  | $ | 555 |  |  | $ | 38 |
*There is no ineffective portion or amount excluded from effectiveness testing.

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