Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator:
Net income (loss) (in dollars)	$ 495,924	$ (293,964)	$ 1,023,091	$ (1,722,443)
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding	12,008,420	12,316,878	12,036,124	12,222,146
Effect of dilutive stock options (in share)	364,920		303,921
Denominator for diluted net income (loss) per share - weighted average shares outstanding	12,373,340	12,316,878	12,340,045	12,222,146
Basic net income (loss) per share (in dollars per share)	$ 0.04	$ (0.02)	$ 0.09	$ (0.14)
Dilute net income (loss) per share (in dollars per share)	$ 0.04	$ (0.02)	$ 0.08	$ (0.14)
Securities excluded from the diluted net income per share calculation
Employee stock options excluded from the diluted net income per share calculation (in shares)	1,063,500