Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Property, Plant and Equipment (Details Textual)

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Note 7 - Property, Plant and Equipment (Details Textual) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended
Dec. 05, 2018
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2019
Jul. 31, 2020
Depreciation, Total $ 2.1 $ 6.5 $ 5.5 $ 14.1 $ 19.5