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Income Taxes (Detail) - Reconciliation of “expected” income tax expense (benefit) to “actual” income tax expense (benefit) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Income Tax Disclosure [Abstract]    
Computed “expected” tax expense (in Dollars) $ 1,224 $ 5
Computed “expected” tax expense 34.00% 34.00%
Increases (reductions) in taxes resulting from:    
State income taxes, net of federal tax benefit (in Dollars) $ 124 $ 79
State income taxes, net of federal tax benefit 3.50% 492.80%
Foreign operations (in Dollars) $ 67 $ 359
Foreign operations 1.90% 2243.80%
Permanent differences (in Dollars) $ (20) $ 14
Permanent differences (0.60%) 89.30%
Foreign net operating loss (in Dollars) $ 0 $ 1
Stock based compensation 0.00% 4.30%
Uncertain tax liability adjustment (in Dollars) $ 8 $ (54)
Uncertain tax liability adjustment 0.20% (337.50%)
Research & Development Credit (in Dollars) $ (344) $ (91)
Research & Development Credit (9.60%) (568.80%)
Other items (in Dollars) $ (63) $ (87)
Other items (1.70%) (543.80%)
Income tax expense (benefit) $ 996 $ 226
Income tax expense 27.70% 1414.10%