Note 13 - Major Customers (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Sales Revenue, Net [Member] | Customer 1 [Member]
Concentration Risk, Percentage	22.00%	18.00%		16.00%
Sales Revenue, Net [Member] | Customer 2 [Member]
Concentration Risk, Percentage	19.00%	13.00%		13.00%
Sales Revenue, Net [Member] | Customer 3 [Member]
Concentration Risk, Percentage	15.00%	11.00%		12.00%
Sales Revenue, Net [Member]
Concentration Risk, Percentage			0.00%
Accounts Receivable [Member] | Customer 1 [Member]
Concentration Risk, Percentage			39.00%	36.00%
Accounts Receivable [Member] | Customer 2 [Member]
Concentration Risk, Percentage			30.00%	18.00%