Marketable Securities

12 Months Ended

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

During the year ended December 31, 2018, our marketable securities consisted of United States Treasury notes and common stock. The United States Treasury notes were classified as available-for-sale and matured in 2019.

On January 1, 2018 we adopted ASU 2016-01 and reclassified a $1.9 million unrealized gain from cumulative other comprehensive loss to cumulative net income on our consolidated balance sheet. In March 2018, we sold all common stock we held for total proceeds of $23.9 million and recognized a loss of $5.0 million in interest and other income, net during the year ended December 31, 2018.

Below is a summary of our marketable securities as of December 31, 2018 (in thousands):

	December 31,
	2018
	Amortized Cost		Unrealized Loss		Estimated Fair Value
Marketable securities	$	249,944	$	(342)	$	249,602