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Income Taxes - Income Taxes Computed Using Federal Income Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Amount computed using statutory rate							$ (666)	$ (674)	$ 1,798
Net change in valuation allowance for net deferred tax assets							1,889	1,619	(1,677)
AMT and other							(148)	151
Foreign rate differential							(70)	(1)
Non-deductible items							(1,136)	(182)	(411)
State income tax							(15)	(370)	288
Foreign net operating loss							147
Income tax (provision) benefit	$ 96	$ (79)	$ (16)	$ (32)	$ 578	$ (3)	$ 1	$ 543	$ (2)

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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