Nature of Operations and Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($)	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share Basic And Diluted [Abstract]
Net income (loss)	$ (322,059)	$ 146,180
Weighted-average common shares outstanding - basic	31,094,417	30,618,097
Weighted-average common shares outstanding - diluted	31,094,417	31,173,815
Net income (loss) per share - Basic	$ (0.01)	$ 0.00
Net income (loss) per share - Diluted	$ (0.01)	$ 0.00