Investments in Non-Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Details of Non-marketable Debt Securities

As of December 31, 2020, the adjusted cost and carrying value and fair value of the non-marketable debt security is the following (in thousands):

	December 31, 2020
	Adjusted Cost and Carrying Value		Fair Value
Non-marketable debt security due in 1 year or less	$	1,000	$	1,000

Carrying Value of Non-marketable Equity Securities

The following table presents balances of the carrying value of non-marketable equity securities (in thousands):

	September 30, 2021		December 31, 2020
Non-marketable equity securities	$	12,763	$	1,450