Net Income Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Net income (in dollars)	$ 1,129,544	$ 495,924	$ 3,340,940	$ 1,023,091
Denominator:
Denominator for basic net income per share - weighted average shares outstanding	12,191,778	12,008,420	12,125,262	12,036,124
Effect of dilutive stock options (in shares)	595,832	364,920	450,864	303,921
Denominator for diluted net income per share - weighted average shares outstanding	12,787,610	12,373,340	12,576,126	12,340,045
Basic net income per share (in dollars per share)	$ 0.09	$ 0.04	$ 0.28	$ 0.09
Dilute net income per share (in dollars per share)	$ 0.09	$ 0.04	$ 0.27	$ 0.08
Shares excluded from the calculation of diluted net income per share	11,250	1,063,500
Shares/units that could be potentially dilutive			251,800