Cash, Cash Equivalents and Investments

12 Months Ended

Dec. 31, 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 December 31, 2019
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
Cash and cash equivalents and investments	Cost		Gains		Losses		Value
Cash, cash equivalents and money market funds	$	157,954	$	—	$	—	$	157,954
U.S. Treasury securities		20,037		16		—		20,053
Corporate debt securities		3,459		—		—		3,459
Certificates of deposit		1,950		—		—		1,950
Total		183,400		16		—		183,416
Less amounts classified as cash and cash equivalents		(157,954)		—		—		(157,954)
Total available-for-sale investments	$	25,446	$	16	$	—	$	25,462

	As of December 31, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
Cash and cash equivalents and investments	Cost		Gains		Losses		Value
Cash, cash equivalents 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	$	—	$	—	$	—	$	—