Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2016	Sep. 30, 2015
Current
Federal	$ 6,324	$ 5,017
State	511	1,089
Total	6,835	6,106
Deferred
Federal	1,539	1,444
State	(181)	(136)
Deferred income tax expense (benefit), total	1,358	1,308
Total	$ 8,193	$ 7,414

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

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