Income Taxes (Detail) - Components of income before income tax and income tax expense (benefit) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income (loss) before income tax:
U.S.	$ 3,418	$ 576
Foreign	182	(560)
Income before income taxes	3,600	16
Current:
Federal	303	(4)
State	118	24
Foreign	159	152
Current Income Tax Expense (Benefit)	580	172
Deferred:
Federal	400	(36)
State	46	67
Foreign	(30)	23
Deferred Income Tax Expense (Benefit)	416	54
Income tax expense (benefit)	$ 996	$ 226