Cash and Cash Equivalents, and Investments (Tables)

6 Months Ended

Jun. 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 June 30, 2021 and December 31, 2020 (in thousands):


	June 30, 2021
	Adjusted Cost		Unrealized Gain		Unrealized Loss		Fair Value
Cash and cash equivalents:
Cash	$	33,022	$	—	$	—	$	33,022

Money market funds	807,034		—		—		807,034

Total cash and cash equivalents	$	840,056	$	—	$	—	$	840,056
Short-term investments:
Commercial paper	$	514,715	$	120	$	—	$	514,835
Corporate debt securities	690,873		566		(130)		691,309

Agency bonds	15,501		21		—		15,522
Total short-term investments	$	1,221,089	$	707	$	(130)	$	1,221,666
Long-term investments:
Corporate debt securities	$	476,143	$	75	$	(366)	$	475,852

Agency bonds	9,000		1		—		9,001
Total long-term investments	$	485,143	$	76	$	(366)	$	484,853


	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 June 30, 2021 (in thousands):


	Adjusted Cost		Fair Value
Due in 1 year or less	$	1,221,089	$	1,221,666
Due in 1-2 years	485,143		484,853
Investments not due at a single maturity date	807,034		807,034
Total	$	2,513,266	$	2,513,553