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Cash, Cash Equivalents, Marketable Securities, and Restricted Cash - Cash and Available for Sale Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Cash, Money Market Funds, and Marketable Securities      
Cash and cash equivalents $ 233,647 $ 246,994 $ 263,320
Fair value, cash balances 233,647 246,994  
Cost, available-for-sale securities 16,100 39,196  
Gross unrealized gain, available-for-sale securities 10 14  
Gross unrealized loss, available-for-sale securities 0 (4)  
Fair value, available-for-sale debt securities 16,110 39,206  
Cost, cash balances and available-for-sale securities 249,747 286,190  
Gross unrealized gain, cash balances and available-for-sale securities 10 14  
Gross unrealized loss, cash balances and available-for-sale securities 0 (4)  
Fair value, cash balances and available-for-sale securities 249,757 286,200  
Commercial paper      
Cash, Money Market Funds, and Marketable Securities      
Cost, available-for-sale securities 5,991 14,651  
Gross unrealized gain, available-for-sale securities 0 12  
Gross unrealized loss, available-for-sale securities 0 0  
Fair value, available-for-sale debt securities 5,991 14,663  
Treasury bill      
Cash, Money Market Funds, and Marketable Securities      
Cost, available-for-sale securities 9,958 12,944  
Gross unrealized gain, available-for-sale securities 10 2  
Gross unrealized loss, available-for-sale securities 0 0  
Fair value, available-for-sale debt securities 9,968 12,946  
U.S. government agency bonds      
Cash, Money Market Funds, and Marketable Securities      
Cost, available-for-sale securities 0 11,450  
Gross unrealized gain, available-for-sale securities 0 0  
Gross unrealized loss, available-for-sale securities 0 (4)  
Fair value, available-for-sale debt securities 0 11,446  
Money market      
Cash, Money Market Funds, and Marketable Securities      
Cost, available-for-sale securities 100 100  
Gross unrealized gain, available-for-sale securities 0 0  
Fair value, available-for-sale debt securities 100 100  
Gross unrealized loss, cash balances and available-for-sale securities 0 0  
Certificates of deposit      
Cash, Money Market Funds, and Marketable Securities      
Cost, available-for-sale securities 51 51  
Gross unrealized gain, available-for-sale securities 0 0  
Fair value, available-for-sale debt securities 51 51  
Gross unrealized loss, cash balances and available-for-sale securities $ 0 $ 0