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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Fair Value of Financial Instruments
Money Market Funds	$ 30,768	$ 53,790	$ 34,710
Marketable securities	554,234
Fair Value, Recurring
Fair Value of Financial Instruments
Total Fair Value	565,858	668,757
Money Market Funds
Fair Value of Financial Instruments
Money Market Funds	11,624	25,520
Money Market Funds | Fair Value, Recurring
Fair Value of Financial Instruments
Money Market Funds	11,624	25,520
Corporate Securities
Fair Value of Financial Instruments
Marketable securities	211,657	228,723
Corporate Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	211,657	228,723
Government Securities
Fair Value of Financial Instruments
Marketable securities	342,577	414,514
Government Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	342,577	414,514
Level 1 | Fair Value, Recurring
Fair Value of Financial Instruments
Total Fair Value	11,624	25,520
Level 1 | Money Market Funds | Fair Value, Recurring
Fair Value of Financial Instruments
Money Market Funds	11,624	25,520
Level 1 | Corporate Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	0	0
Level 1 | Government Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	0	0
Level 2 | Fair Value, Recurring
Fair Value of Financial Instruments
Total Fair Value	554,234	643,237
Level 2 | Money Market Funds | Fair Value, Recurring
Fair Value of Financial Instruments
Money Market Funds	0	0
Level 2 | Corporate Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	211,657	228,723
Level 2 | Government Securities | Fair Value, Recurring
Fair Value of Financial Instruments
Marketable securities	$ 342,577	$ 414,514

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