Note 13 - Segment and Related Information - Asset Information (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015
Identifiable Assets
Assets	$ 15,434,755	$ 3,866,575
Corporate, Non-Segment [Member]
Identifiable Assets
Assets	6,477,510	844,318
Indicators and Gauges [Member] | Operating Segments [Member]
Identifiable Assets
Assets	754,149	729,520
Automotive Diagnostic Tools and Equipment [Member] | Operating Segments [Member]
Identifiable Assets
Assets	1,418,345	2,292,737
Flexible Metal Hose and Silicone Hose [Member] | Operating Segments [Member]
Identifiable Assets
Assets	$ 6,784,751