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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment, Intangible Assets and Insurance (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016
Goodwill and Intangible Assets: |  |
Impairment of goodwill, indefinite-lived assets or identifiable intangible assets with finite lives | $ 0.0 | $ 0.0
Insurance |  |
Letter of credit issued for worker's compensation insurance carrier as part of the entity's self-insured loss control program | $ 0.4 |
Buildings |  |
Property and Equipment |  |
Estimated useful lives | 40 years |
Warehouse equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 5 years |
Warehouse equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 7 years |
Furniture, fixtures and leasehold improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 2 years |
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 |

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of goodwill, indefinite-lived assets or identifiable intangible assets with finite lives to fair value. + References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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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- Details
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |