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Income Taxes - Reconciliation of Income tax expense (benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Income Tax Disclosure [Abstract] |  |
Computed “expected” tax benefit (in Dollars) | $ (225) | $ (93)
Computed “expected” tax benefit | 21.20% | 21.00%
Increases (reductions) in taxes resulting from: |  |
State income taxes, net of federal tax benefit (in Dollars) | $ (7) | $ (73)
State income taxes, net of federal tax benefit | 0.70% | 16.50%
Foreign operations (in Dollars) | $ 2 | $ (46)
Foreign operations | (0.20%) | 10.40%
Permanent differences (in Dollars) | $ (3) | $ 31
Permanent differences | 0.30% | (7.00%)
Change in valuation allowance (in Dollars) | $ 1,005 | $ 235
Change in valuation allowance | (94.70%) | (53.20%)
Deferred revenue (in Dollars) |  | $ (48)
Deferred revenue |  | 10.90%
Payable true up (in Dollars) |  | $ 17
Payable true up |  | (3.80%)
Uncertain tax liability adjustment (in Dollars) |  | $ (41)
Uncertain tax liability adjustment |  | (9.30%)
Research & development credit (in Dollars) | $ (107) | $ (90)
Research & development credit | 10.10% | 20.40%
Benefit of US Federal NOL carryback (in Dollars) | $ (222) |
Benefit of US Federal NOL carryback | 20.90% |
Other items (in Dollars) | $ (59) | $ 37
Other items | 5.50% | (8.40%)
Income tax (benefit) expense (in Dollars) | $ 384 | $ (71)
Income tax (benefit) expense | (36.20%) | 16.10%

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