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Note 15 - Shareholders' Equity (Tables) | 12 Months Ended
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Oct. 31, 2016
Notes Tables |
Schedule of Share Repurchases [Table Text Block] |
Fiscal years ended October 31, |  | Shares repurchased |  |  | Cost |
2016 |  |  | 14,225 |  |  | $ | 40,150 |
2015 |  |  | 80,636 |  |  |  | 379,675 |
2014 |  |  | 44,464 |  |  |  | 195,206 |

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