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Note 7 - Property and Equipment - Property and Equipment (Details) - USD ($)
Dec. 31, 2018
Sep. 30, 2018
Property and equipment $ 4,459,228 $ 4,423,422
Accumulated depreciation (2,096,308) (1,974,697)
Property and equipment, net 2,362,920 2,448,725
Furniture and Fixtures [Member]    
Property and equipment 1,412,506 1,326,784
Machinery and Equipment [Member]    
Property and equipment 1,156,983 1,095,099
Leasehold Improvements [Member]    
Property and equipment 1,746,335
Construction in Progress [Member]    
Property and equipment $ 143,404 $ 2,001,539