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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of Cash Equivalents and Marketable Securities Classified as Available-for-Sale Securities Measured at Fair Value on Recurring Basis

Cash equivalents and marketable securities, all of which are classified as available-for-sale securities and measured at fair value on a recurring basis, consisted of the following (in thousands):

 

 

 

 

 

As of September 30, 2020

 

 

 

Fair Value

Hierarchy

Level

 

Amortized

Cost

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Fair

Value

 

Financial assets:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds—classified

   as cash equivalents

 

Level 1

 

$

19,087

 

 

$

 

 

$

 

 

$

19,087

 

Corporate debt

 

Level 2

 

 

51,413

 

 

 

111

 

 

 

 

 

 

51,524

 

Commercial paper

 

Level 2

 

 

18,458

 

 

 

 

 

 

 

 

 

18,458

 

U.S. government agency securities

 

Level 2

 

 

32,568

 

 

 

8

 

 

 

 

 

 

32,576

 

Total

 

 

 

$

121,526

 

 

$

119

 

 

$

 

 

$

121,645