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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment to Accounting Pronouncements (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Property and Equipment |  |
Impairment of property and equipment |  | $ 0.0
Revenue Recognition |  |
Practical expedient, financing components | true |
Insurance |  |
Letter of credit issued for worker's compensation insurance carrier as part of the entity's self-insured loss control program | $ 0.6 |
Contract Costs |  |
Practical expedient to expense as incurred any incremental costs to obtain and fulfill customer contracts | true |
Maximum |  |
Property and Equipment |  |
Impairment of property and equipment | $ 0.1 |
Land improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 10 years |
Land improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 15 years |
Warehouse equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 3 years |
Warehouse equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 20 years |
Buildings and improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 5 years |
Buildings and improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 40 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 Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition Indicates (true false) whether practical expedient was elected not to adjust consideration for effect of financing component when transfer and customer payment for product or service occurs within one year or less. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130569-203045 + Details
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