Cash and Cash Equivalents, and Investments (Tables)

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents [Abstract]

The following tables show our cash and cash equivalents, and investments’ adjusted cost, unrealized gain, unrealized loss, and fair value as of September 30, 2021 and December 31, 2020 (in thousands):


	September 30, 2021
	Adjusted Cost		Unrealized Gain		Unrealized Loss		Fair Value
Cash and cash equivalents:
Cash	$	29,338	$	—	$	—	$	29,338

Money market funds	684,499		—		—		684,499

Total cash and cash equivalents	$	713,837	$	—	$	—	$	713,837
Short-term investments:
Commercial paper	$	364,098	$	49	$	(4)	$	364,143
Corporate debt securities	658,525		280		(122)		658,683

Agency bonds	15,501		18		—		15,519
Total short-term investments	$	1,038,124	$	347	$	(126)	$	1,038,345
Long-term investments:
Corporate debt securities	$	813,889	$	142	$	(531)	$	813,500


Total long-term investments	$	813,889	$	142	$	(531)	$	813,500


	December 31, 2020
	Adjusted Cost		Unrealized Gain		Unrealized Loss		Fair Value
Cash and cash equivalents:
Cash	$	15,054	$	—	$	—	$	15,054
Money market funds	464,799		—		—		464,799

Total cash and cash equivalents	$	479,853	$	—	$	—	$	479,853
Short-term investments:
Commercial paper	$	204,152	$	24	$	(6)	$	204,170
Corporate debt securities	459,967		1,478		(48)		461,397


Total short-term investments	$	664,119	$	1,502	$	(54)	$	665,567
Long-term investments:
Corporate debt securities	$	484,275	$	605	$	(283)	$	484,597

Agency bonds	38,995		36		—		39,031
Total long-term investments	$	523,270	$	641	$	(283)	$	523,628

Schedule of Available-for-sale Securities Reconciliation

The following table shows our cash equivalents and investments' adjusted cost and fair value by contractual maturity as of September 30, 2021 (in thousands):


	Adjusted Cost		Fair Value
Due in 1 year or less	$	1,038,124	$	1,038,345
Due in 1-2 years	813,889		813,500
Investments not due at a single maturity date	684,499		684,499
Total	$	2,536,512	$	2,536,344