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Income Taxes (Detail) - Components of income before income tax and income tax expense (benefit) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Income before income tax:    
U.S. $ (1,077) $ 3,383
Foreign (29) 22
Income (loss) before income taxes and discontinued operations (1,106) 3,405
Current:    
Federal 771 1,067
State 47 119
Foreign 0 0
Current Income Tax Expense (Benefit) 818 1,186
Deferred:    
Federal 259 (86)
State (118) 37
Foreign (77) 25
Deferred Income Tax Expense (Benefit) 64 (24)
Income tax expense (benefit) $ 882 $ 1,162