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Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Assets and liabilities that are measured at fair value on a recurring basis
The following tables set forth our assets that are measured at fair value on a recurring basis at December 31, 2020 and 2019:
December 31, 2020
(in thousands)TotalLevel 1Level 2Level 3
Cash equivalents$539,891 $539,891 $— $— 
December 31, 2019
(in thousands)TotalLevel 1Level 2Level 3
Cash equivalents$8,948 $8,948 $— $—