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Supporting Financial Information - Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2022 | Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |
Interest expense (a) |  |  |  |  |  |  |  |  | $ 1,551 | $ 2,992
Amortization of deferred financing costs (b) |  |  |  |  |  |  |  |  | 664 | 792
Interest expense | $ 477 | $ 512 | $ 554 | $ 672 | $ 808 | $ 893 | $ 1,004 | $ 1,080 | $ 2,215 | $ 3,784

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