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Summary of Income Tax Expense From Operations (Detail) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Tax Expense Benefit [Line Items]
Current federal expense (benefit)	$ 124,000	$ (10,000)	$ (3,167,000)
Current state expense	693,000	500,000	238,000
Deferred federal expense	6,251,000	4,737,000	3,920,000
Deferred state expense (benefit)	2,022,000	176,000	(552,000)
Income tax expense	$ 9,090,000	$ 5,403,000	$ 439,000

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.