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Summary of Income Tax (Benefit) Expense From Operations (Detail) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Tax Expense Benefit [Line Items]
Current federal (benefit) expense	$ (74,000)us-gaap_CurrentFederalTaxExpenseBenefit	$ 124,000us-gaap_CurrentFederalTaxExpenseBenefit	$ (10,000)us-gaap_CurrentFederalTaxExpenseBenefit
Current state expense	633,000	693,000	500,000
Foreign tax expense	228,000
Deferred federal (benefit) expense	(5,489,000)	6,251,000	4,737,000
Deferred state (benefit) expense	(578,000)	2,022,000	176,000
Income tax (benefit) expense	$ (5,280,000)us-gaap_IncomeTaxExpenseBenefit	$ 9,090,000us-gaap_IncomeTaxExpenseBenefit	$ 5,403,000us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.