Note 7 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended | |
|---|---|---|---|---|---|
Dec. 05, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
|
| Depreciation, Total | $ 2.1 | $ 5.2 | $ 4.3 | $ 8.7 | $ 8.3 |
| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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