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Fair Value Measurements
12 Months Ended
Dec. 31, 2017
Fair Value Disclosures [Abstract]  
Fair Value Measurements

Note 2. Fair Value Measurements

The following tables present information about the Company’s financial assets and liabilities that have been measured at fair value as of December 31, 2017 and 2016, and indicates the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands):

 

 

 

December 31, 2017

 

 

 

Level 1

 

 

Level 2

 

 

Total

 

 

 

 

 

Money market funds

 

$

24,225

 

 

$

 

 

$

24,225

 

Corporate notes and obligations

 

 

 

 

 

38,020

 

 

 

38,020

 

U.S. government treasury securities

 

 

55,881

 

 

 

 

 

 

55,881

 

 

 

$

80,106

 

 

$

38,020

 

 

$

118,126

 

 

 

 

December 31, 2016

 

 

 

Level 1

 

 

Level 2

 

 

Total

 

 

 

 

 

Money market funds

 

$

18,029

 

 

$

 

 

$

18,029

 

Corporate notes and obligations

 

 

 

 

 

33,840

 

 

 

33,840

 

U.S. government treasury securities

 

 

41,347

 

 

 

 

 

 

41,347

 

 

 

$

59,376

 

 

$

33,840

 

 

$

93,216

 

 

At December 31, 2017 and 2016, the Company utilized the market approach to value its money market mutual funds and U.S. government treasury securities using Level 1 valuation inputs because published net asset values were readily available. The Company’s Level 2 marketable securities are valued using the market approach based on broker or dealer quotations, actual trade data, recent observable transaction information for similar securities, benchmark yields or alternative pricing sources with reasonable levels of price transparency, and include the Company’s investments in U.S. government agency securities and corporate notes and obligations.