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Fair Value Measurements - Carrying Values and Estimated Fair Values of Other Financial Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | ---
Carrying Amount |  |
Financial assets |  |
Total financial assets | $ 9,174 | $ 1,951
Financial liabilities |  |
Notes payable | 974,644 | 978,028
Carrying Amount | Senior Notes |  |
Financial liabilities |  |
Notes payable | 899,791 | 903,691
Carrying Amount | Junior Subordinated Notes |  |
Financial liabilities |  |
Notes payable | 74,853 | 74,337
Fair Value |  |
Financial assets |  |
Total financial assets | 9,185 | 1,986
Financial liabilities |  |
Notes payable | 976,629 | 932,865
Fair Value | Senior Notes |  |
Financial liabilities |  |
Notes payable | 901,776 | 858,528
Fair Value | Junior Subordinated Notes |  |
Financial liabilities |  |
Notes payable | $ 74,853 | $ 74,337

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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