Cash, Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2020

Cash and Cash Equivalents [Abstract]

Amortized Cost and Fair Value of Cash, Cash Equivalents and Marketable Securities

The following tables summarize the amortized cost and the estimated fair value of our cash, cash equivalents and marketable securities as of March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Current assets:
Cash	$	11,271	$	—	$	—	$	11,271
Cash equivalents:
Money market funds	224,070		—		—		224,070
Commercial paper	34,634		—		—		34,634
Total cash and cash equivalents	269,975		—		—		269,975
Marketable securities:
Commercial paper	39,528		—		—		39,528
Corporate debt securities	70,543		273		(66)		70,750
Certificate of deposits	39,940		—		—		39,940
Total marketable securities	150,011		273		(66)		150,218
Total cash, cash equivalents and marketable securities	$	419,986	$	273	$	(66)	$	420,193

	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Current assets:
Cash	$	43,058	$	—	$	—	$	43,058
Cash equivalents:
Money market funds	11,527		—		—		11,527
Commercial paper	7,485		—		—		7,485
Total cash and cash equivalents	62,070		—		—		62,070
Marketable securities:
Commercial paper	73,366		—		—		73,366
Corporate debt securities	74,038		381		(2)		74,417
Certificate of deposits	41,302		—		—		41,302
Total marketable securities	188,706		381		(2)		189,085
Total cash, cash equivalents and marketable securities	$	250,776	$	381	$	(2)	$	251,155

Cost and Fair Value of Marketable Securities

The following table summarizes the cost and fair value of marketable securities based on stated effective maturities as of March 31, 2020 (in thousands):

	Amortized Cost		Fair Value
Due within one year	$	127,968	$	128,147
Due between one and two years	22,043		22,071
Total	$	150,011	$	150,218