v3.19.3

Note 10 - Warrants - Warrants Assumptions (Details) - Warrants for Series A Convertible Preferred Stock [Member]	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jul. 01, 2010
Measurement Input, Risk Free Interest Rate [Member]
Risk-free interest rate		2.28
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Risk-free interest rate	2.56		0.0146
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Risk-free interest rate	2.59		0.0266
Measurement Input, Expected Term [Member] | Minimum [Member]
Risk-free interest rate	6.92	7.92
Measurement Input, Expected Term [Member] | Maximum [Member]
Risk-free interest rate	7.08	8.08	7
Measurement Input, Price Volatility [Member]
Risk-free interest rate		71.00
Measurement Input, Price Volatility [Member] | Minimum [Member]
Risk-free interest rate	76.84		0.736
Measurement Input, Price Volatility [Member] | Maximum [Member]
Risk-free interest rate			0.815

X

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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X

- Details

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- Details

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- Details

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