Note 8 - Convertible Notes Payable - Convertible Debt (Details) - USD ($)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Mar. 18, 2013
Debt Instrument, Interest Rate, Stated Percentage			2.00%
Convertible Notes Payable	$ 6,170,000	$ 7,050,000
3/26/1999	50,000	50,000
3/26/1999	5,770,000	5,825,000
3/26/1999	350,000	1,175,000
Related Party [Member]
3/26/1999	0	0
3/26/1999	5,770,000	5,825,000
Non-Related Party [Member]
3/26/1999	50,000	50,000
3/26/1999	$ 350,000	$ 1,175,000
Convertible Notes Payable 10% $50,000 [Member]
Maturity date	Jun. 30, 2004	Jun. 30, 2004
Debt Instrument, Interest Rate, Stated Percentage	10.00%	10.00%
Convertible Notes Payable	$ 50,000	$ 50,000
Convertible Notes Payable 10% $50,000 [Member] \| Related Party [Member]
3/26/1999	0	0
3/26/1999	0	0
Convertible Notes Payable 10% $50,000 [Member] \| Non-Related Party [Member]
3/26/1999	50,000	50,000
3/26/1999	$ 0	$ 0
Convertible Notes Payable 10% $150,000 [Member]
Maturity date	Apr. 01, 2019	Apr. 01, 2018
Debt Instrument, Interest Rate, Stated Percentage	10.00%	10.00%
Convertible Notes Payable	$ 150,000	$ 150,000
Convertible Notes Payable 10% $150,000 [Member] \| Related Party [Member]
3/26/1999	0	0
3/26/1999	0	0
Convertible Notes Payable 10% $150,000 [Member] \| Non-Related Party [Member]
3/26/1999	0	0
3/26/1999	$ 150,000	$ 150,000
Convertible Notes Payable 10% $1,770,000 [Member]
Maturity date	Apr. 01, 2020	Apr. 01, 2020
Debt Instrument, Interest Rate, Stated Percentage	10.00%	10.00%
Convertible Notes Payable	$ 1,770,000	$ 1,770,000
Convertible Notes Payable 10% $1,770,000 [Member] \| Related Party [Member]
3/26/1999	0	0
3/26/1999	1,770,000	1,770,000
Convertible Notes Payable 10% $1,770,000 [Member] \| Non-Related Party [Member]
3/26/1999	0	0
3/26/1999	$ 0	$ 0
Convertible Notes Payable12 Percent, 200,000 [Member]
Maturity date	Apr. 01, 2020	Apr. 01, 2018
Debt Instrument, Interest Rate, Stated Percentage	12.00%	12.00%
Convertible Notes Payable	$ 4,000,000	$ 200,000
Convertible Notes Payable12 Percent, 200,000 [Member] \| Related Party [Member]
3/26/1999	0	0
3/26/1999	4,000,000	0
Convertible Notes Payable12 Percent, 200,000 [Member] \| Non-Related Party [Member]
3/26/1999	0	0
3/26/1999	$ 0	$ 200,000
Convertible Notes Payable 12 Percent,100,000 [Member]
Maturity date	Apr. 01, 2021	Apr. 01, 2020
Debt Instrument, Interest Rate, Stated Percentage	12.00%	12.00%
Convertible Notes Payable	$ 200,000	$ 100,000
Convertible Notes Payable 12 Percent,100,000 [Member] \| Related Party [Member]
3/26/1999	0	0
3/26/1999	0	0
Convertible Notes Payable 12 Percent,100,000 [Member] \| Non-Related Party [Member]
3/26/1999	0	0
3/26/1999	$ 200,000	$ 100,000
Convertible Notes Payable 12% $4,055,000 [Member]
Maturity date		Apr. 01, 2020
Debt Instrument, Interest Rate, Stated Percentage		12.00%
Convertible Notes Payable		$ 4,055,000
Convertible Notes Payable 12% $4,055,000 [Member] \| Related Party [Member]
3/26/1999		0
3/26/1999		4,055,000
Convertible Notes Payable 12% $4,055,000 [Member] \| Non-Related Party [Member]
3/26/1999		0
3/26/1999		$ 0
Convertible Notes Payable, 12%, $100,000 issued 9/30/2009 [Member]
Maturity date		Apr. 01, 2018
Debt Instrument, Interest Rate, Stated Percentage		12.00%
Convertible Notes Payable		$ 100,000
Convertible Notes Payable, 12%, $100,000 issued 9/30/2009 [Member] \| Related Party [Member]
3/26/1999		0
3/26/1999		0
Convertible Notes Payable, 12%, $100,000 issued 9/30/2009 [Member] \| Non-Related Party [Member]
3/26/1999		0
3/26/1999		$ 100,000
Convertible Notes Payable 12% $625,000 [Member]
Maturity date		Apr. 01, 2020
Debt Instrument, Interest Rate, Stated Percentage		12.00%
Convertible Notes Payable		$ 625,000
Convertible Notes Payable 12% $625,000 [Member] \| Related Party [Member]
3/26/1999		0
3/26/1999		0
Convertible Notes Payable 12% $625,000 [Member] \| Non-Related Party [Member]
3/26/1999		0
3/26/1999		$ 625,000

Convertible notes payable related parties noncurrent.

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- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
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- Definition

Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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