| NOTE
3 – FAIR VALUE MEASUREMENTS   Fair
value measurements affect the Company’s accounting for certain of its financial assets. Fair value is defined as the price
that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants
at the measurement date and is measured according to a hierarchy that includes:   
    |  | Level 1: |  | Observable inputs, such as
    quoted prices in active markets. |  
    |  | Level
    2: |  | Inputs,
    other than quoted prices in active markets, that are observable either directly or indirectly. Level 2 assets and liabilities
    include debt securities with quoted market prices that are traded less frequently than exchange-traded instruments. This category
    includes U.S. government agency-backed debt securities and corporate-debt securities. |  
    |  | Level
    3: |  | Unobservable
    inputs in which there is little or no market data. |    The
following tables summarize the Company’s financial assets measured at fair value on a recurring basis as of June 30, 2017
and December 31, 2016 (in thousands):   
    | Description |  | June
                                         30, 2017 |  |  | Quoted
                                         Prices in Active
        Markets (Level
        1) |  |  
    | Assets: |  |  |  |  |  |  |  |  |  
    | Cash equivalents |  | $ | 17,266 |  |  | $ | 17,266 |  |  
    |  |  |  |  |  |  |  |  |  |  
    | Total
    assets |  | $ | 17,266 |  |  | $ | 17,266 |  |    
    | Description |  | December
                                         31, 2016 |  |  | Quoted
                                         Prices in Active
        Markets (Level
        1) |  |  | Significant
                                         Other Observable
        Inputs (Level
        2) |  |  
    | Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  
    | Cash
    equivalents |  | $ | 10,006 |  |  | $ | 10,006 |  |  | $ | — |  |  
    | Marketable
    securities – available for sale |  |  | 7,180 |  |  |  | 5,926 |  |  |  | 1,254 |  |  
    |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    | Total
    assets |  | $ | 17,186 |  |  | $ | 15,932 |  |  | $ | 1,254 |  |