PROPERTY AND EQUIPMENT, NET (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	$ 36,542,652	$ 37,308,998
Less accumulated depreciation and amortization: Owned property and equipment	(23,934,775)	(24,555,853)
Property and equipment, net	12,607,877	12,753,145
Land
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	648,818	648,818
Buildings
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	10,661,543	10,609,478
Warehouse equipment
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	12,915,534	12,801,465
Furniture, fixtures and leasehold improvements
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	10,118,995	10,656,515
Vehicles
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	2,164,794	2,536,919
Construction in progress
PROPERTY AND EQUIPMENT, NET
Property and equipment, gross	$ 32,968	$ 55,803