CASH EQUIVALENTS AND MARKETABLE SECURITIES - (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

The table below summarizes the Company’s cash equivalents and marketable securities (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Estimated Fair Value
June 30, 2020
Assets
Cash equivalents:
Money market funds	$	116,393	$	—	$	—	$	116,393
Total	116,393		—		—		116,393
Marketable securities:
Commercial paper securities	89,796		383		—		90,179
Corporate debt securities	81,424		420		—		81,844
U.S. government-sponsored entity debt securities	25,211		176		—		25,387
Total	196,431		979		—		197,410
Total cash equivalents and marketable securities	$	312,824	$	979	$	—	$	313,803
December 31, 2019
Assets
Cash equivalents:
Money market funds	$	30,496	$	—	$	—	$	30,496
Commercial paper securities	2,998		1		—		2,999
Total	33,494		1		—		33,495
Marketable securities:
Commercial paper securities	155,230		145		(7)		155,368
Corporate debt securities	94,905		115		(3)		95,017
U.S. government-sponsored entity debt securities	53,411		91		(9)		53,493
Total	303,546		351		(19)		303,878
Total cash equivalents and marketable securities	$	337,040	$	352	$	(19)	$	337,373

Fair value of investments available-for-sale

The fair value of investments available-for-sale by contractual maturity were as follows (in thousands):

	June 30, 2020		December 31, 2019
Maturing in one year or less	$	197,410	$	282,046
Maturing after one year through five years	—		21,832
Total	$	197,410	$	303,878