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Note 5 - Intangible Assets (Details)			3 Months Ended		12 Months Ended
	Apr. 24, 2013 USD ($)	Aug. 31, 2011 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016	Dec. 31, 2017 USD ($)
Note 5 - Intangible Assets (Details) [Line Items]
Amortization of Intangible Assets			$ 101,676	$ 371,003
Customer Relationships [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Gross			6,150,559			$ 6,150,559
Customer Relationships [Member] | Diamond Bar [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Gross		$ 50,000
Finite-Lived Intangible Assets, Amortization Method		straight-line method
Customer Relationships [Member] | Bright Swallow International Group Limited [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Amortization Method	straight-line method
Finite-Lived Intangible Asset, Useful Life	15 years
Finite-lived Intangible Assets, Fair Value Disclosure	$ 6,100,559
Trademarks [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Gross			$ 200,000			$ 200,000
Trademarks [Member] | Diamond Bar [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Number of trademarks acquired		2
Payments to Acquire Intangible Assets		$ 200,000
Finite-Lived Intangible Assets, Amortization Method		straight-line method
Finite-Lived Intangible Asset, Useful Life		5 years
Computer Software, Intangible Asset [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year	10 years
Finite-Lived Intangible Assets, Period Increase (Decrease)				$ 1,200,000
Use Rights [Member]
Note 5 - Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Assets, Amortization Method				straight-line method

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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