SEGMENTS (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) segment	Mar. 31, 2015 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment			1
SEGMENTS
Net sales	$ 59,492	$ 55,404	$ 115,451	$ 108,448
Branded nutritional supplements and other natural products
SEGMENTS
Net sales	53,687	49,102	104,186	96,190
Other
SEGMENTS
Net sales	5,805	6,302	11,265	12,258
Increase in product group net sales from prior year due to classify certain net sales		781		1,570
United States
SEGMENTS
Net sales	52,350	48,807	102,400	95,532
Foreign countries
SEGMENTS
Net sales	$ 7,142	$ 6,597	$ 13,051	$ 12,916