Note 2 - Stock Compensation (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2018 |
Apr. 30, 2017 |
Apr. 30, 2018 |
Apr. 30, 2017 |
|
| Allocated Share-based Compensation Expense, Total | $ 1.0 | $ 1.0 | $ 2.1 | $ 1.5 |
| Allocated Share-based Compensation Expense, Net of Tax | 0.9 | 1.4 | ||
| Employee Stock Option [Member] | ||||
| Allocated Share-based Compensation Expense, Total | $ 0.1 | $ 0.1 | $ 0.3 | $ 0.2 |