Cash, Cash Equivalents and Investments

9 Months Ended

Sep. 30, 2019

Cash, Cash Equivalents and Investments

Cash, Cash Equivalents and Investments

4.           Cash, Cash Equivalents and Investments

The fair value and the amortized cost of cash, cash equivalents and available-for-sale investments by major security type consist of the following (in thousands):

	As of September 30, 2019
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
Cash and cash equivalents and investments	Cost		Gains		Losses		Value
Cash and money market funds	$	166,144	$	—	$	—	$	166,144
U.S. Treasury securities		34,846		48		—		34,894
Total		200,990		48		—		201,038
Less amounts classified as cash and cash equivalents		(166,144)		—		—		(166,144)
Total available-for-sale investments	$	34,846	$	48	$	—	$	34,894

	As of December 31, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
Cash and cash equivalents and investments	Cost		Gains		Losses		Value
Cash and money market funds	$	114,504	$	—	$	—	$	114,504
Total		114,504		—		—		114,504
Less amounts classified as cash and cash equivalents		(114,504)		—		—		(114,504)
Total available-for-sale investments	$	—	$	—	$	—	$	—