Investments (Tables)

3 Months Ended

Mar. 31, 2020

Investments in privately-held companies [Abstract]

Equity Securities without Readily Determinable Fair Value

The following table summarizes the activity related to our investments in privately-held companies held as of March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020		December 31, 2019
Cost of investment	$	3,000	$	3,000
Cumulative impairment	—		—
Cumulative upward adjustment	1,150		1,150
Carrying amount of investment	$	4,150	$	4,150