Annual report [Section 13 and 15(d), not S-K Item 405]

Acquisitions and Dispositions - Additional Information (Details)

Acquisitions and Dispositions - Additional Information (Details)							12 Months Ended
	Sep. 12, 2025 USD ($)	Jun. 10, 2024 USD ($)	May 24, 2024 USD ($)	May 15, 2024 USD ($) option	Nov. 30, 2023 USD ($) installment Location	Oct. 13, 2023 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Gain (loss) on assets transferred							$ 0	$ (301,000)
Working capital adjustment							0	702,000
Total goodwill							61,152,000	61,152,000	$ 75,866,000
Flooring Liquidators
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Holdback obligation amount	$ 1,500,000
Gain (loss) on assets transferred							0
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]
Purchase price		$ 600,000
Property and equipment		738,000
Business combination, transaction value		1,001,000
Net purchase price		1,000,000
Cash consideration at close							0	1,000,000
Total goodwill		0
Midwest Grinding Acquisition \| Building
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Property and equipment		$ 400,000
Central Steel acquisition
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Purchase price				$ 11,758,000
Property and equipment				5,034,000
Business combination, transaction value				15,313,000
Net purchase price				13,880,000
Cash consideration at close				10,700,000			0	10,474,000
Net purchase price				122,000
Working capital adjustment				200,000			$ (1,400,000)
Fair value of contingent consideration				$ 2,000,000
Earn-out period (in years)				5 years
Net (payments) borrowings under revolver loans				$ 3,300,000
Purchase price for equity interests				0
Total goodwill				2,906,000
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				20 years
Lessee, renewal option \| option				2
Lessee, renewal term				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]
Lessee base rent				58,795
Central Steel acquisition \| Maximum
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Net purchase price				300,000
Central Steel acquisition \| Minimum
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Net purchase price				$ 100,000
Johnson Floor & Home
Business Combination, Goodwill, Reportable Segment Assignment [Line Items]
Purchase price					$ 500,000
Property and equipment					157,000
Business combination, transaction value					4,159,000
Net purchase price					2,001,000
Fair value of contingent consideration					301,000
Total 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]
Purchase price						$ 1,034,000
Property and equipment						261,000
Business combination, transaction value						3,491,000
Net purchase price						1,423,000
Net purchase price						300,000
Fair value of contingent consideration						89,000
Total goodwill						$ 89,000		89,000
Noncash fair value adjustment of additional consideration								$ 336,000