Note 7 - Property and Equipment (Tables)

3 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,			September 30,
	2018			2018
Office furniture and equipment	$	1,412,506		$	1,326,784
Machinery and equipment		1,156,983			1,095,099
Leasehold improvements		1,746,335			-
Construction in progress		143,404			2,001,539
Property and equipment, gross		4,459,228			4,423,422
Accumulated depreciation		(2,096,308	)		(1,974,697	)
Property and equipment, net	$	2,362,920		$	2,448,725

Depreciation Expense [Member]

Notes Tables

Property, Plant and Equipment [Table Text Block]

	Three Months Ended December 31,
	2018		2017
Depreciation expense	$	124,460	$	58,301