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The Tax Cuts and Jobs Act (Details Textual) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Dec. 22, 2017 | Oct. 31, 2018
Income Tax Contingency [Line Items] |  |
U.S. federal statutory corporate tax rate |  | 26.90%
U.S. federal statutory tax rate, thereafter |  | 21.00%
Federal net operating loss carryforwards |  | $ 12
Minimum [Member] |  |
Income Tax Contingency [Line Items] |  |
U.S. federal statutory corporate tax rate | 21.00% |
Maximum [Member] |  |
Income Tax Contingency [Line Items] |  |
U.S. federal statutory corporate tax rate | 35.00% |

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