Note 5 - Fair Value Measurement - Marketable Securities

Following is a description of the valuation methodologies used for assets measured at fair value as of September 30, 2017 and December 31, 2016.

U.S. Agency Securities, Corporate and Municipal Securities and Certificates of Deposits: Valued using pricing models maximizing the use of observable inputs for similar securities. This includes basing value on yields currently available on comparable securities of issuers with similar credit ratings.

Marketable securities include U.S. agency securities, corporate securities, and municipal securities, which are classified as available for sale. The securities are valued at fair market value. Maturities of the securities are less than one year. Unrealized gains relating to the available for sale investment securities were recorded in the Condensed Consolidated Statement of Changes in Stockholders’ Equity as comprehensive income. These amounts were an unrealized loss of $1,009 and $- (net of effect of income tax expense of $-) for the three and nine months ended September 30, 2017 and an unrealized loss of $2,837 and an unrealized gain of $3,691 for the three and nine months ended September 30, 2016.

Proceeds from the sale of marketable securities in the three and nine months ended September 30, 2017 were $1,003,565 and $2,749,119 and were $950,514 and $3,452,833 for the three and nine months ended September 30, 2016. Gross gains, resulting from these sales, amounted to $1,719 and $1,269 for the three months ended September 30, 2017 and 2016 and $3,375 and $3,421 for the nine months ended September 30, 2017 and 2016.