Note 18 - Segment Information - Segment Disclosures (Details) - USD ($)	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019
Revenues	$ 8,781,702	$ 10,177,559
Operating Income	696,657	1,289,875
Depreciation and amortization	208,537	201,267
Interest expense	172,390	283,003
Long-lived assets	5,715,931		$ 5,750,890
Total assets	52,647,396		47,119,983
Intersegment Eliminations [Member]
Revenues	384,995	186,972
Hardware [Member]
Revenues	8,362,042	9,656,702
Operating Income	696,070	1,302,646
Depreciation and amortization	131,167	124,301
Interest expense	172,390	283,003
Long-lived assets	2,226,938		2,283,344
Total assets	47,904,766		42,470,356
Hardware [Member] | Intersegment Eliminations [Member]
Revenues
Software [Member]
Revenues	419,660	520,857
Operating Income	587	(12,771)
Depreciation and amortization	77,370	76,966
Interest expense
Long-lived assets	3,488,993		3,467,546
Total assets	4,742,630		$ 4,649,627
Software [Member] | Intersegment Eliminations [Member]
Revenues	$ 384,995	$ 186,972