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Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2022
Investments, All Other Investments [Abstract]  
Cash and Cash Equivalents
The following tables summarize our cash and cash equivalents, and marketable securities on our Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021 (in thousands):
Reported as:
March 31, 2022Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair ValueCash and Cash EquivalentsMarketable securities, short-termMarketable securities, long-term
Cash$689,175 $— $— $689,175 $689,175 $— $— 
Money market funds236,960 — (16)236,944 236,944 — — 
Corporate bonds116,307 3 (2,389)113,921 — 41,164 72,757 
U.S. government treasury bonds
46,638 — (511)46,127 — 31,055 15,072 
Asset-backed securities27,453 — (197)27,256 — 10,984 16,272 
Municipal bonds6,049 — (77)5,972 — 3,546 2,426 
U.S. government agency bonds1,204 — (36)1,168 — — 1,168 
Total$1,123,786 $3 $(3,226)$1,120,563 $926,119 $86,749 $107,695 

Reported as:
December 31, 2021Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair ValueCash and Cash EquivalentsMarketable securities, short-termMarketable securities, long-term
Cash$754,802 $— $— $754,802 $754,802 $— $— 
Money market funds343,012 — (2)343,010 343,010 — — 
Corporate bonds115,507 9 (398)115,118 1,042 35,065 79,011 
U.S. government treasury bonds
42,976 — (48)42,928 — 22,251 20,677 
Asset-backed securities32,031 — (40)31,991 — 10,999 20,992 
Municipal bonds7,628 — (15)7,613 516 3,657 3,440 
U.S. government agency bonds1,201 — (1)1,200 — — 1,200 
Total$1,297,157 $9 $(504)$1,296,662 $1,099,370 $71,972 $125,320 
Marketable Securities
The following tables summarize our cash and cash equivalents, and marketable securities on our Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021 (in thousands):
Reported as:
March 31, 2022Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair ValueCash and Cash EquivalentsMarketable securities, short-termMarketable securities, long-term
Cash$689,175 $— $— $689,175 $689,175 $— $— 
Money market funds236,960 — (16)236,944 236,944 — — 
Corporate bonds116,307 3 (2,389)113,921 — 41,164 72,757 
U.S. government treasury bonds
46,638 — (511)46,127 — 31,055 15,072 
Asset-backed securities27,453 — (197)27,256 — 10,984 16,272 
Municipal bonds6,049 — (77)5,972 — 3,546 2,426 
U.S. government agency bonds1,204 — (36)1,168 — — 1,168 
Total$1,123,786 $3 $(3,226)$1,120,563 $926,119 $86,749 $107,695 

Reported as:
December 31, 2021Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair ValueCash and Cash EquivalentsMarketable securities, short-termMarketable securities, long-term
Cash$754,802 $— $— $754,802 $754,802 $— $— 
Money market funds343,012 — (2)343,010 343,010 — — 
Corporate bonds115,507 9 (398)115,118 1,042 35,065 79,011 
U.S. government treasury bonds
42,976 — (48)42,928 — 22,251 20,677 
Asset-backed securities32,031 — (40)31,991 — 10,999 20,992 
Municipal bonds7,628 — (15)7,613 516 3,657 3,440 
U.S. government agency bonds1,201 — (1)1,200 — — 1,200 
Total$1,297,157 $9 $(504)$1,296,662 $1,099,370 $71,972 $125,320 
Contractual Maturity of Marketable Securities
The following table summarizes the fair value of our available-for-sale marketable securities classified by contractual maturity as of March 31, 2022 and December 31, 2021 (in thousands):

March 31, 2022December 31, 2021
Due in 1 year or less $67,225 $59,737 
Due in 1 year through 5 years$127,219 139,113 
Total$194,444 $198,850 
Financial Assets Measured At Fair Value On A Recurring Basis
The following tables summarize our financial assets measured at fair value as of March 31, 2022 and December 31, 2021 (in thousands):
DescriptionBalance as of
March 31, 2022		Level 1

Level 2
Level 3
Cash equivalents:
Money market funds$236,944 $236,944 $— $— 
Short-term investments:
U.S. government treasury bonds31,055 31,055 — — 
Corporate bonds41,164 — 41,164 — 
Municipal bonds3,546 — 3,546 — 
Asset-backed securities10,984 — 10,984 — 
Long-term investments:
U.S. government treasury bonds15,072 15,072 — — 
Corporate bonds72,757 — 72,757 — 
Municipal bonds2,426 — 2,426 — 
U.S. government agency bonds1,168 — 1,168 — 
Asset-backed securities16,272 — 16,272 — 
Other assets:
Investments in privately held companies11,225 — — 11,225 
$442,613 $283,071 $148,317 $11,225 
DescriptionBalance as of December 31, 2021Level 1Level 2Level 3
Cash equivalents:
Money market funds$343,010 $343,010 $— $— 
Corporate bonds1,042 — 1,042 — 
Municipal bonds516 — 516 — 
Short-term investments:
U.S. government treasury bonds22,251 22,251 — — 
Corporate bonds35,065 — 35,065 — 
Municipal bonds3,657 — 3,657 — 
Asset-backed securities10,999 — 10,999 — 
Long-term investments:
U.S. government treasury bonds
20,677 20,677 — — 
Corporate bonds79,011 — 79,011 — 
Municipal bonds
3,440 — 3,440 — 
U.S. government agency bonds
1,200 — 1,200 — 
Asset-backed securities
20,992 — 20,992 — 
Prepaid expenses and other current assets:
Israeli funds3,841 — 3,841 — 
Other assets:
Investments in privately held companies8,621 — — 8,621 
$554,322 $385,938 $159,763 $8,621 
Schedule of Notional Amounts of Outstanding Derivative Positions
The following tables present the gross notional value of all our foreign exchange forward contracts outstanding as of March 31, 2022 and December 31, 2021 (in thousands):
March 31, 2022
Local Currency AmountNotional Contract Amount (USD)
Euro€189,795$210,031 
Chinese Yuan¥520,50081,862 
Polish ZlotyPLN324,50077,086 
Canadian DollarC$96,00076,733 
Brazilian RealR$323,70067,665 
Japanese Yen¥5,666,20046,621 
British Pound£32,27542,394 
Russian Ruble₽3,700,00035,885 
Swiss FrancCHF17,27018,692 
Israeli ShekelILS54,21017,085 
Mexican PesoM$281,56014,127 
Australian DollarA$5,0003,748 
$691,929 
December 31, 2021
Local Currency AmountNotional Contract Amount (USD)
Euro€165,110$186,358 
Canadian DollarC$99,80078,018 
Chinese Yuan¥494,50077,358 
Polish ZlotyPLN219,80054,014 
Brazilian RealR$286,50050,894 
Japanese Yen¥5,548,70048,206 
British Pound£34,74046,881 
Israeli ShekelILS54,11017,416 
Mexican PesoM$311,50015,133 
Swiss FrancCHF9,95010,883 
Australian DollarA$6,9005,009 
$590,170