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Note 12 - Fair Value Measurements | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Fair Value Disclosures [Text Block] | NOTE 12 – FAIR VALUE MEASUREMENTS The following table presents information about warrant derivative liabilities that are measured at fair value on a recurring basis as of December 31, 2018, and indicate the fair value hierarchy of the valuation techniques we utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are observable, such as quoted prices, interest rates and yield curves. Fair values determined by Level 3 inputs are unobservable data points for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability.
|  | Derivatives at Fair Value as of December 31, 2018 |
(in thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Warrant liabilities |  |  | - |  |  |  | - |  |  |  | (865 | ) |  |  | (865 | )
Total warrant liabilities |  | $ | - |  |  | $ | - |  |  | $ | (865 | ) |  | $ | (865 | )
|  | Derivatives at Fair Value as of December 31, 2017 |
(in thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Warrant liabilities |  |  | - |  |  |  | - |  |  |  | (2,387 | ) |  |  | (2,387 | )
Total warrant liabilities |  | $ | - |  |  | $ | - |  |  | $ | (2,387 | ) |  | $ | (2,387 | )
The following table presents a reconciliation of Level 3 activity for the years ended December 31, 2017 and 2018:
|  | Level 3 Liabilities |
(in thousands) |  | Warrant Liabilities |
Balance at January 1, 2017 |  | $ | - |
New warrants issued |  |  | 3,080 |
Unrealized losses, net |  |  | 2,608 |
Settlement of warrants |  |  | (3,301 | )
Balance at December 31, 2017 |  | $ | 2,387 |
Unrealized gains, net |  |  | (1,522 | )
Balance at December 31 ,2018 |  | $ | 865 |
The 2017 Warrants are Level 3 derivative liabilities and are valued using a lattice model that uses unobservable inputs such as volatility and future probability of issuing new shares.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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