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Summary of Significant Accounting Policies - Other Non-current Assets, Net (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Sep. 30, 2021
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Accounting Policies [Abstract] |  |
Deferred financing costs, net | $ 1,345 | $ 1,353
Prepayments to outside operators | 690 | 707
Right of use assets | $ 208 | $ 309
Right of use assets [Extensible Enumeration] | Total other non-current assets, net | Total other non-current assets, net
Other deposits | $ 50 | $ 50
Total other non-current assets, net | $ 2,293 | $ 2,419

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- Definition Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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