Note 15 - Shareholders' Equity (Tables)	12 Months Ended
Oct. 31, 2018
Notes Tables
Schedule of Share Repurchases [Table Text Block]	<div style="display: inline; font-family: times new roman; font-size: 10pt"><table border="0px" cellpadding="0pt" cellspacing="0pt" style="margin: 0pt auto 0pt 45pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;"> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%; border-bottom: thin solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;">Fiscal years ended </div></div> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;">October 31,</div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; width: 3%; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Shares </div></div></div> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">repurchased</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; width: 3%; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Cost</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 1%; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2018</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">272</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">1,557</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2017</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">5,701</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">18,122</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2016</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,225</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">40,150</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> </table></div>

Note 15 - Shareholders' Equity (Tables)

12 Months Ended

Oct. 31, 2018

Schedule of Share Repurchases [Table Text Block]

<div style="display: inline; font-family: times new roman; font-size: 10pt"><table border="0px" cellpadding="0pt" cellspacing="0pt" style="margin: 0pt auto 0pt 45pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;"> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%; border-bottom: thin solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;">Fiscal years ended </div></div> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;">October 31,</div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; width: 3%; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Shares </div></div></div> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">repurchased</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 3%; padding-bottom: 1px;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; width: 3%; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Cost</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 1%; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2018</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">272</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">1,557</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2017</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">5,701</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">18,122</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 38%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; text-align: center;">2016</div> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,225</div></td> <td nowrap="nowrap" style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 3%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 23%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">40,150</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> </table></div>