Note 11 - Convertible Notes - Convertible Notes (Details) (Parentheticals)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Convertible Debt [Member]
Conversion Rights	3,019,851
Convertible Payable 1 [Member] \| Convertible Debt [Member]
Interest Rate	7.00%	7.00%
Conversion Rights	335,833	335,833
Convertible Notes 2 [Member]
Interest Rate	5.00%	5.00%
Conversion Rights	2,684,018	2,684,018
Maturing Dates Range	May 2018 and November 2020	May 2018 and November 2020

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
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