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Marketable Securities (Tables)
3 Months Ended
Mar. 31, 2022
Marketable Securities [Abstract]  
Summary of Marketable Securities
Marketable securities consisted of the following as of the periods presented (in thousands):
March 31, 2022
Amortized Cost
Gross Unrealized GainsGross Unrealized Losses Fair Value
Marketable Securities
U.S. Treasury securities$196,282 $$(1,544)$194,739 
Certificates of deposit14,273 (43)14,234 
Corporate debt securities32,979 — (267)32,712 
Commercial paper
14,712 — (48)14,664 
Asset-backed securities5,187 — (9)5,178 
Total marketable securities$263,433 $$(1,911)$261,527 
    
December 31, 2021
Amortized Cost
Gross Unrealized Gains
Gross Unrealized Losses Fair Value
Marketable Securities
U.S. Treasury securities$157,681 $— $(404)$157,277 
Certificates of deposit6,495 — (5)6,490 
Corporate debt securities36,422 — (95)36,327 
Commercial papers11,624 (6)11,620 
Asset-backed securities5,901 (7)5,895 
Total marketable securities$218,123 $$(517)$217,609 
Summary of Marketable Securities in an Unrealized Loss Position
Marketable securities in an unrealized loss position for less than 12 months consisted of the following as of the periods presented (in thousands):
March 31, 2022December 31, 2021
Fair ValueGross Unrealized LossFair ValueGross Unrealized Loss
U.S. Treasury securities$179,056 $(1,544)$143,590 $(404)
Certificates of deposit11,727 (43)6,490 (5)
Corporate debt securities31,990 (267)36,327 (95)
Commercial paper14,663 (48)6,984 (6)
Asset-backed securities5,007 (9)4,967 (7)
Total$242,443 $(1,911)$198,358 $(517)
Summary of Remaining Contractual Maturities of Marketable Securities
The following summarizes the remaining contractual maturities of the Company’s marketable securities as of March 31, 2022:
Fair Value
One year or less$240,174 
Over one year through five years21,353 
Total marketable securities$261,527