Marketable Securities

9 Months Ended

Sep. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

As of December 31, 2018, our marketable securities consisted of United States Treasury notes and were classified as available-for-sale. The United States Treasury notes matured in January and February 2019, and as of September 30, 2019, we do not have any marketable securities.

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