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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of Assets Measured on Recurring Basis The following table presents information about our assets that are measured at fair value on a recurring basis using the above input categories (in thousands):
Fair Value Measurements as of June 30, 2020Fair Value Measurements as of December 31, 2019
Description
Total
Level 1
Level 2
Total
Level 1
Level 2
Money market funds$378,501  $378,501  $—  $360,471  $360,471  $—  
Commercial paper8,959  —  8,959  —  —  —  
U.S. treasury debt securities21,050  —  21,050  10,349  —  10,349  
U.S. corporate debt securities76,442  —  76,442  95,865  —  95,865  
$484,952  $378,501  $106,451  $466,685  $360,471  $106,214  
Included in cash and cash equivalents$378,501  $360,471  
Included in marketable securities$106,451  $106,214