Summary of Income Tax Provision Computed by Applying Statutory Federal Income Tax Rate to Income (Losses) from Continuing Operations Before Income Taxes (Detail) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Tax (benefit) expense computed at statutory rate of 35%	$ (6,265,000)	$ 6,850,000	$ 5,781,000
Change in valuation allowance	1,506,000	1,265,000
State income tax (benefit) expense, net of federal tax	32,000	1,486,000	433,000
Foreign losses	(1,506,000)	(987,000)
Transaction costs	332,000		(1,353,000)
Other	621,000	476,000	542,000
Income tax (benefit) expense	$ (5,280,000)	$ 9,090,000	$ 5,403,000