Note 12 - Convertible Notes - Related Parties (Details Textual)		12 Months Ended
Apr. 15, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Interest Expense, Related Party		$ 430,818	$ 336,139
Subsequent Event [Member]
Convertible Debt, Total	$ 200,675
Convertible Debt Payable to Related Party [Member]
Interest Payable, Related Party		588,854	344,801
Interest Expense, Related Party		$ 246,568	$ 246,247
Debt Instrument, Convertible, Number of Equity Instruments		1,586,676
Convertible Debt Payable to Related Party [Member] \| Subsequent Event [Member]
Convertible Debt, Total	$ 926,368
Convertible Debt to Related Party in Default [Member] \| Subsequent Event [Member]
Debt Instrument, Convertible, Number of Equity Instruments	578,980

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_ConvertibleDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant