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Fair Value Measurements (Tables) | 3 Months Ended
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Dec. 31, 2021
Fair Value Disclosures [Abstract] |
Schedule of carrying values and estimated fair values of other financial assets and liabilities | The following table presents the carrying value and estimated fair value of certain other financial liabilities as of December 31, 2021 and September 30, 2021:
| As of December 31, 2021 |  | As of September 30, 2021
in thousands | Carrying Amount (a) |  | Fair Value |  | Carrying Amount (a) |  | Fair Value
Senior Notes and Term Loan (b) | $ | 984,218 |  |  | $ | 1,058,740 |  |  | $ | 983,827 |  |  | $ | 1,046,965 |
Junior Subordinated Notes (c) | 70,720 |  |  | 70,720 |  |  | 70,203 |  |  | 70,203 |
Total | $ | 1,054,938 |  |  | $ | 1,129,460 |  |  | $ | 1,054,030 |  |  | $ | 1,117,168 |
(a) Carrying amounts are net of unamortized debt issuance costs or accretion. (b) The estimated fair value for our publicly-held Senior Notes and the Term Loan have been determined using quoted market rates (Level 2). (c) Since there is no trading market for our Junior Subordinated Notes, the fair value of these notes is estimated by discounting scheduled cash flows through maturity (Level 3). The discount rate is estimated using market rates currently being offered on loans with similar terms and credit quality. Judgment is required in interpreting market data to develop these estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange.

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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