Note 6 - Property and Equipment (Tables)

3 Months Ended

Dec. 31, 2017

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,			September 30,
	2017			2017
Office furniture and equipment	$	1,097,619		$	1,093,502
Machinery and equipment		1,044,206			994,157
Leasehold improvements		76,138			76,138
Property and equipment, gross		2,217,963			2,163,797
Accumulated depreciation		(1,712,494	)		(1,654,194	)
Property and equipment, net	$	505,469		$	509,603

Depreciation Expense [Member]

Notes Tables

Property, Plant and Equipment [Table Text Block]

	Three months ended
	December 31,
	2017		2016
Depreciation expense	$	58,301	$	30,684