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Note 4 - Balance Sheet Components - Loss From Abandonment and (or) Disposal of Obsolete Equipment, by Segment (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Loss on disposal or abandonment of assets | $ 3,139 | $ 16,985 | $ 31,064
North America Segment [Member] |  |  |
Loss on disposal or abandonment of assets | 2,378 | 17,699 | 19,583
International Leathercraft [Member] |  |  |
Loss on disposal or abandonment of assets | $ 761 | $ (714) | $ 11,481

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
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