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Note 10 - Business and Credit Concentrations, Major Customers and Geographic Information (Tables) | 12 Months Ended
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Oct. 31, 2018
Notes Tables |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Years ended October 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
United States |  | $ | 74,778,141 |  |  | $ | 51,558,474 |  |  | $ | 51,379,528 |
Outside the United States |  |  | 13,050,449 |  |  |  | 12,534,374 |  |  |  | 13,236,473 |
Total net sales |  | $ | 87,828,590 |  |  | $ | 64,092,848 |  |  | $ | 64,616,001 |

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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