Segments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014 segment	Sep. 30, 2013	Sep. 30, 2012
Segments
Number of operating segments	1
SEGMENTS
Net sales	$ 214,474	$ 208,397	$ 200,367
Branded nutritional supplements and other natural products
SEGMENTS
Net sales	193,837	188,871	183,347
Other
SEGMENTS
Net sales	20,637	19,526	17,020
United States
SEGMENTS
Net sales	185,729	180,934	177,093
Foreign countries
SEGMENTS
Net sales	$ 28,745	$ 27,463	$ 23,274

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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Period Type:	duration