Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair Values of Financial Instruments Measured on a Recurring Basis

The fair values of the financial instruments we measure at fair value on a recurring basis are as follows (in thousands):

	March 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	1,022,691	$	—	$	—	$	1,022,691
Commercial paper	—		140,301		—		140,301
U.S. treasury securities	11,999		—		—		11,999
Marketable securities:
Corporate bonds	—		416,340		—		416,340
Commercial paper	—		224,046		—		224,046
U.S. treasury securities	209,669		—		—		209,669
Certificates of deposit	—		83,530		—		83,530
Municipal securities	—		31,852		—		31,852
Non-U.S. government and supranational bonds	—		27,909		—		27,909
U.S. agency bonds	—		1,000		—		1,000
Prepaid expenses and other current assets:
Certificates of deposit	—		1,137		—		1,137
Other assets:
Certificates of deposit	$	—	$	6,297	$	—	$	6,297

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	711,188	$	—	$	—	$	711,188
Commercial paper	—		114,976		—		114,976
Corporate bonds	—		4,310		—		4,310
Marketable securities:
Corporate bonds	—		449,417		—		449,417
Commercial paper	—		247,560		—		247,560
U.S. treasury securities	189,010		—		—		189,010
Certificates of deposit	—		82,486		—		82,486
Municipal securities	—		49,331		—		49,331
Non-U.S. government and supranational bonds	—		41,684		—		41,684
U.S. agency bonds	—		1,000		—		1,000
Prepaid expenses and other current assets:
Certificates of deposit	—		1,137		—		1,137
Other assets:
Certificates of deposit	$	—	$	6,297	$	—	$	6,297

Fair Value of Marketable Securities by Contractual Maturity

The fair value of our marketable securities by contractual maturity is as follows (in thousands):

	March 31, 2022
Due in one year or less	$	711,071
Due after one to five years	283,275
Total	$	994,346