Lines of Credit (Detail)	12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,000,000	$ 1,000,000
Interest rate terms	London Inter-Bank Offer Rate (“LIBOR”) plus 2.5%, with a floor of 4%	London Inter-Bank Offer Rate (“LIBOR”) plus 2.5%, with a floor of 4%
liquidity ratio	1.2
Minimum Net Worth Required for Compliance	$ 2.5
Ratio of Indebtedness to Net Capital	5.0
Short-term Debt	$ 2,900,000	$ 2,100,000
Line of Credit
Line of Credit Facility [Line Items]
Stated interest rate, percentage, minimum	4.00%	4.00%
Line of Credit | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	5.00%	5.00%