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Note 11 - Geographical Sales (Details) - Schedule of Sales by Geographic Region - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Geographical Areas
Sales		$ 9,322,836	$ 16,747,827	$ 24,577,846	$ 63,159,929
North America [Member]
Geographical Areas
Sales		4,247,435	13,237,312	12,375,085	40,224,090
CHINA
Geographical Areas
Sales		4,958,128	0	11,792,589	0
AUSTRALIA
Geographical Areas
Sales		0	548,580	0	11,075,268
Asia [Member]
Geographical Areas
Sales	[1]	0	2,816,233	0	11,677,878
Other Countries [Member]
Geographical Areas
Sales		$ 117,273	$ 145,702	$ 410,172	$ 182,693
[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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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