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Note 7 - Property and Equipment - Property and Equipment (Details) - USD ($)
Sep. 30, 2018
Sep. 30, 2017
Property and equipment $ 4,423,422 $ 2,163,797
Accumulated depreciation (1,974,697) (1,654,194)
Property and equipment, net 2,448,725 509,603
Furniture and Fixtures [Member]    
Property and equipment 1,326,784 1,093,502
Machinery and Equipment [Member]    
Property and equipment 1,095,099 994,157
Leasehold Improvements [Member]    
Property and equipment 76,138
Construction in Progress [Member]    
Property and equipment $ 2,001,539