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Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Current:
Federal	$ 19,747	$ 14,486	$ 2,168
State	4,909	3,759	1,495
Deferred	659	1,676	12,913
Income tax expense	$ 25,315	$ 19,921	$ 16,576

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 income tax expense (benefit) pertaining to income (loss) from continuing operations.