Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 30, 2013 Age	Sep. 30, 2012	Sep. 30, 2011
Employee Benefit Plans (Textual) [Abstract]
Service of employees under savings plan	6 months
Minimum age of employees under savings plan	18
Contribution made by employees	20.00%
Contributions made by company	$ 121,000	$ 39,000	$ 146,000
Cumulative plan forfeitures applied against company matching contribution	$ 12,000	$ 100,000
Discretionary contributions to the plan	6 years