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Fair Value Measurements
9 Months Ended
Sep. 30, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements
Fair Value Measurements

Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities. Cash equivalents, which include money market funds, are stated at amortized cost, which approximates fair value as of the balance sheet dates, due to the short period of time to maturity. Accounts receivable, accounts payable and accrued liabilities are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment.

Cash and cash equivalents are carried at fair value. Our money market funds are classified within Level I of the fair value hierarchy, as these instruments are valued using quoted market prices. Specifically, we value our investments in money market securities based on quoted market prices in active markets. As of September 30, 2015 and December 31, 2014, we had no assets or liabilities classified within Level II or Level III and there were no transfers of instruments between Level I, Level II and Level III regarding fair value measurement.

The following table sets forth the fair value of our financial assets measured on a recurring basis, by level, within the fair value hierarchy (in thousands):
 
September 30, 2015
 
December 31, 2014
 
Level I
 
Total
 
Level I
 
Total
Financial Assets
 
 
 
 
 
 
 
Money market funds
$
41,070

 
$
41,070

 
$
51,047

 
$
51,047


We did not have realized gains or losses for the three and nine months ended September 30, 2015 and 2014 related to our financial assets.