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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment, Intangible Assets, Insurance and Fair Value Measurements (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Goodwill and Intangible Assets: |  |
Goodwill impairment charges | $ 1,912,877 |
Indefinite-lived assets impairment charges | 0 | $ 0
Insurance |  |
Letter of credit issued for worker's compensation insurance carrier as part of the entity's self-insured loss control program | 500,000 |
Retail Segment |  |
Goodwill and Intangible Assets: |  |
Goodwill impairment charges | $ 1,900,000 |
Buildings and improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 5 years |
Buildings and improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 40 years |
Warehouse equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 3 years |
Warehouse equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 12 years |
Furniture, fixtures and leasehold improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 1 year |
Furniture, fixtures and leasehold improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 12 years |
Vehicles | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 2 years |
Vehicles | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 5 years |

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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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