Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Valuation allowance	$ 0	$ 0
Unrecognized Tax Benefits	0
Uncertain tax position	0
Effective income tax rate	11.50%
Retained earnings	4,600,000
Provision for Federal income tax	$ 0