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Summary of Significant Accounting Policies - Additional Information (Details) | 12 Months Ended
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Sep. 30, 2021 USD ($) Segment | Sep. 30, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |
Minimum annual commission due in factoring, per contract year | $ 100,000 |
Allowance for doubtful accounts | 61,000 | $ 272,000
Allowance for inventory reserves | 1,793,000 | 3,135,000
Goodwill impairment | 0 | 0
Intangible amortization expense | 522,000 | 605,000
Warranty reserve | 105,000 | 206,000
Breakage income related from gift cards | 10,000 | 75,000
Advertising Expense | $ 350,000 | 305,000
Lease expiration period | various dates through 2040 |
Number of operating segments | Segment | 3 |
Federal Deposit Insurance Corporation insured amount | $ 250,000 |
Customer Lists |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 20 years |
Trade Names |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 20 years |
Leases |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | over the life of the lease |
Retail and Online |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Allowance for inventory reserves | $ 1,900,000 | 3,100,000
ApplianceSmart Inc |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Debtor in possession assets | $ 180,000 | $ 520,000
Minimum |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Percentage of factoring commission | 0.75% |
Percentage of interest on factoring | 3.25% |
Minimum | Domain Name and Marketing |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 3 years |
Minimum | Software |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 3 years |
Minimum | Customer Relationships |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 7 years |
Minimum | Building and Improvements |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 3 years |
Minimum | Transportation Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 5 years |
Minimum | Machinery and Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 5 years |
Minimum | Furnishings and Fixtures |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 3 years |
Minimum | Office and Computer Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 3 years |
Maximum |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Percentage of factoring commission | 1.00% |
Percentage of interest on factoring | 6.00% |
Maximum | Domain Name and Marketing |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 20 years |
Maximum | Software |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 5 years |
Maximum | Customer Relationships |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of intangible assets | 15 years |
Maximum | Building and Improvements |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 40 years |
Maximum | Transportation Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 10 years |
Maximum | Machinery and Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 10 years |
Maximum | Furnishings and Fixtures |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 5 years |
Maximum | Office and Computer Equipment |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Useful lives of property and equipment | 5 years |

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