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	$	—