Annual report pursuant to Section 13 and 15(d)

Investments in Non-Marketable Securities (Tables)

Investments in Non-Marketable Securities (Tables)
12 Months Ended
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Details of Non-marketable Debt Securities
As of December 31, 2020, the adjusted cost, carrying value and fair value of non-marketable debt securities is the following (in thousands):
  December 31, 2020
By contractual maturity: Adjusted Cost and Carrying value Fair Value
Non-marketable debt securities due in 1 year or less $ 1,000  $ 1,000 
Carrying Value of Non-marketable Equity Securities
At December 31, 2020 and 2019, the carrying value of non-marketable equity securities is the following (in thousands):
  December 31,
2020 2019
Non-marketable equity securities $ 1,450  $ —