Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Sales From Natural and Organic Retail Stores (Details)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Sales percentage	100.00%	100.00%
Grocery [Member]
Sales percentage	68.00%	67.00%
Dietary Supplements [Member]
Sales percentage	21.00%	22.00%
Other [Member]
Sales percentage	11.00%	11.00%