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Acquisitions - Additional Information (Details) |  |  |  |  |  | 3 Months Ended | 9 Months Ended |
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Jun. 10, 2024 USD ($) | May 24, 2024 USD ($) | May 15, 2024 USD ($) option | Nov. 30, 2023 USD ($) Location installment | Oct. 13, 2023 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2024 USD ($)
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 61,152,000 |  | $ 61,152,000 |  | $ 61,152,000
Loss on disposition of Johnson |  |  |  |  |  | $ 0 | $ 301,000 | 0 | $ 301,000 |
Disposal Group, Not Discontinued Operations | Johnson Floor & Home |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Loss on disposition of Johnson |  | $ 301,000 |  |  |  |  |  |  |  |
Midwest Grinding Acquisition |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Total consideration for acquisition | $ 600,000 |  |  |  |  |  |  |  |  |
Building acquired | 738,000 |  |  |  |  |  |  |  |  |
Business combination, transaction value | 1,001,000 |  |  |  |  |  |  |  |  |
Net purchase price | 1,000,000 |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  |  |  | 0 | 1,000,000 |
Goodwill | 0 |  |  |  |  |  |  |  |  |
Midwest Grinding Acquisition | Building |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Building acquired | $ 400,000 |  |  |  |  |  |  |  |  |
Central Steel Acquisition |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Total consideration for acquisition |  |  | $ 11,758,000 |  |  |  |  |  |  |
Building acquired |  |  | 5,034,000 |  |  |  |  |  |  |
Business combination, transaction value |  |  | 15,313,000 |  |  |  |  |  |  |
Net purchase price |  |  | 13,880,000 |  |  |  |  |  |  |
Total consideration |  |  | 10,700,000 |  |  |  |  | $ 0 | $ 10,474,000 |
Note amount |  |  | 1,100,000 |  |  |  |  |  |  |
Additional consideration |  |  | 300,000 |  |  |  |  |  |  |
Contingent consideration |  |  | $ 2,000,000 |  |  |  |  |  |  |
Earn-out period (in years) |  |  | 5 years |  |  |  |  |  |  |
Advance made on existing credit facility |  |  | $ 3,300,000 |  |  |  |  |  |  |
Purchase price for equity interests |  |  | 0 |  |  |  |  |  |  |
Goodwill |  |  | 2,906,000 |  |  |  |  |  |  |
Holdback |  |  | 122,000 |  |  |  |  |  |  |
Central Steel Acquisition | Broadview, Illinois Sale Lease Back Transaction |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Sale leaseback transaction, net book value |  |  | 8,300,000 |  |  |  |  |  |  |
Net proceeds received |  |  | 7,900,000 |  |  |  |  |  |  |
Seller fees incurred |  |  | $ 400,000 |  |  |  |  |  |  |
Lease term (in years) |  |  | 20 years |  |  |  |  |  |  |
Lessee, renewal option | option |  |  | 2 |  |  |  |  |  |  |
Lessee, renewal term (in years) |  |  | 5 years |  |  |  |  |  |  |
Rent escalation per annum (as percent) |  |  | 2.00% |  |  |  |  |  |  |
Gain recognized on sale |  |  | $ 0 |  |  |  |  |  |  |
Central Steel Acquisition | Broadview, Illinois Sale Lease Back Transaction | Louisville Lease Agreement |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Base rent |  |  | $ 58,795 |  |  |  |  |  |  |
Johnson Floor & Home |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Total consideration for acquisition |  |  |  | $ 500,000 |  |  |  |  |  |
Building acquired |  |  |  | 157,000 |  |  |  |  |  |
Business combination, transaction value |  |  |  | 4,159,000 |  |  |  |  |  |
Net purchase price |  |  |  | 2,001,000 |  |  |  |  |  |
Note amount |  |  |  | 1,200,000 |  |  |  |  |  |
Contingent consideration |  |  |  | 301,000 |  |  |  |  |  |
Goodwill |  |  |  | $ 0 |  |  |  |  |  |
Number of installment | installment |  |  |  | 3 |  |  |  |  |  |
Installments due |  |  |  | $ 400,000 |  |  |  |  |  |
Accrue interest (as percent) |  |  |  | 6.00% |  |  |  |  |  |
Johnson Floor & Home | Tulsa |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Number of location | Location |  |  |  | 4 |  |  |  |  |  |
Johnson Floor & Home | Joplin |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Number of location | Location |  |  |  | 1 |  |  |  |  |  |
Carpet Remnant Outlet, Inc |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Reportable Segment Assignment [Line Items] |  |  |  |  |  |  |  |  |  |
Total consideration for acquisition |  |  |  |  | $ 1,034,000 |  |  |  |  |
Building acquired |  |  |  |  | 261,000 |  |  |  |  |
Business combination, transaction value |  |  |  |  | 3,491,000 |  |  |  |  |
Net purchase price |  |  |  |  | 1,423,000 |  |  |  |  |
Contingent consideration |  |  |  |  | 89,000 |  |  |  |  |
Goodwill |  |  |  |  | 89,000 |  |  |  |  |
Holdback |  |  |  |  | $ 300,000 |  |  |  |  |

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