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Senior Notes (Tables) | 3 Months Ended
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Dec. 31, 2019
Debt Disclosure [Abstract] |
Carrying Amounts and Fair Values of Senior Notes | The following table presents the carrying amounts and fair values for the Senior Notes at December 31, 2019 and September 30, 2019:
| December 31, 2019 |  | September 30, 2019
| Carrying Amounts (*) |  | Fair Value |  | Carrying Amounts (*) |  | Fair Value
| (In thousands)
The 2010 Senior Notes | 85,000 |  |  | 85,892 |  |  | 85,000 |  |  | 86,121 |
The 2018 Senior Notes | 400,000 |  |  | 442,000 |  |  | 400,000 |  |  | 428,000 |
The 2019 Senior Notes | 350,000 |  |  | 353,937 |  |  | — |  |  | — |
Total | $ | 835,000 |  |  | $ | 881,829 |  |  | $ | 485,000 |  |  | $ | 514,121 |
(*) Amounts exclusive of net debt issuance cost of $11.7 million and $5.2 million at December 31, 2019 and September 30, 2019, respectively.

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