| Leases - Additional Information (Details) - USD ($) | 12 Months Ended | |
|---|---|---|
| Sep. 30, 2021 | Sep. 30, 2020 | |
| Operating Leased Assets [Line Items] | ||
| Weighted average remaining lease term | 8 years 5 months 4 days | |
| Weighted average discount rate | 6.50% | |
| Total cash payments | $ 9,700,000 | |
| Lease agreement description | During July 2020, the Company entered into a lease agreement for office space in Nevada with an initial lease term through November 30, 2025. | |
| Gain on lease settlement, net | $ 0 | $ 307,000 | 
| ApplianceSmart Inc | ||
| Operating Leased Assets [Line Items] | ||
| Gain on lease settlement, net | $ 0 | 1,514,000 | 
| Amount offset by gain on lease settlement | 921,000 | |
| Impairment charges | $ 614,000 | |
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- Definition Amount offset by gain on lease settlement No definition available. 
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- Definition Gain loss on lease settlement. No definition available. 
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Description of lessee's operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Details 
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