SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment to Accounting Pronouncements (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Oct. 01, 2019
Property and Equipment
Impairment charges	$ 485,270	$ 2,873,269
Impairment of property and equipment	$ 200,000	0
Goodwill and Intangible Assets:
Intangible asset impairment charges		2,900,000
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	$ 500,000
Contract Costs
Practical expedient to expense as incurred any incremental costs to obtain and fulfill customer contracts	true
Fair Value Measurements
Intangible asset impairment charges		2,900,000
Accounting Pronouncements
ROU assets	$ 18,936,126
Lease liabilities	$ 19,635,704
Lease, Practical Expedients, Package [true false]	true
ASU 2016-12 | Adjustment
Accounting Pronouncements
ROU assets			$ 21,900,000
Lease liabilities			22,200,000
Decrease of deferred rent			$ 300,000
Retail Segment
Goodwill and Intangible Assets:
Intangible asset impairment charges		2,900,000
Fair Value Measurements
Intangible asset impairment charges		$ 2,900,000
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	15 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