Summary of Significant Accounting Policies (Details 6) (USD $)	12 Months Ended
	Sep. 30, 2012 item	Sep. 30, 2011	Sep. 30, 2010
Revenue Recognition
Period within which Group Purchase Organization customer shipments are monitored to verify receipt by the customer	5 days
Maximum payment period	60 days
Advertising Costs
Advertising expenses	$ 1,353,000	$ 1,370,000	$ 1,600,000
Stock-Based Compensation
Stock-based compensation expense	983,000	1,496,000	1,481,000
Stock-based compensation expense net of tax	639,000	969,000	959,000
Numerator:
Net income (loss) (in dollars)	2,050,484	(1,315,304)	(253,535)
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding	12,032,113	12,217,900	12,181,549
Effect of dilutive stock options	307,387
Denominator for diluted net income (loss) per share - weighted average shares outstanding	12,339,500	12,217,900	12,181,549
Securities excluded from the diluted net income per share calculation
Options not included in calculation of diluted net income per share (in shares)		64,645	706,845
Business Segment
Number of business segment	1
Comprehensive Income (Loss)
Unrealized gain (loss) on available-for-sale securities net of tax	1,821	(204,884)
Cumulative gain foreign currency translation	(3,924,191)	(3,910,993)
Accumulated other comprehensive loss	$ (3,922,370)	$ (4,115,877)
Patents
Patents
Amortization Period	8 years