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Note 11 - Geographical Sales (Details) - Schedule of Sales by Geographic Region - USD ($) | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Geographical Areas |  |  |
Sales |  | $ 10,660,808 | $ 22,303,472
North America [Member] |  |  |
Geographical Areas |  |  |
Sales |  | 4,194,550 | 12,717,485
CHINA |  |  |
Geographical Areas |  |  |
Sales |  | 6,278,704 | 0
AUSTRALIA |  |  |
Geographical Areas |  |  |
Sales |  | 0 | 3,660,465
Asia [Member] |  |  |
Geographical Areas |  |  |
Sales | [1] | 0 | 5,925,522
Other Countries [Member] |  |  |
Geographical Areas |  |  |
Sales |  | $ 187,554 | $ 0
[1] | excluding China

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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