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Fair Value of Financial Instruments - Schedule of Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair value of financial instruments
Debt securities (government)	$ 462,207	$ 442,667	[1]
Short term equity investments	69,875	0	[1]
Long term equity investments	29,668	187,716	[1]
Fair Value, Recurring | Estimate of Fair Value Measurement
Fair value of financial instruments
Cash and cash equivalents	987,293	3,213,376
Debt securities (government)	462,207	442,667
Short term equity investments	69,875
Long term equity investments	29,668	187,716
Total assets	1,549,043	3,843,759
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring
Fair value of financial instruments
Cash and cash equivalents	987,293	3,213,376
Debt securities (government)	0	0
Short term equity investments	69,875
Long term equity investments	29,668	187,716
Total assets	1,086,836	3,401,092
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring
Fair value of financial instruments
Cash and cash equivalents	0	0
Debt securities (government)	462,207	442,667
Short term equity investments	0
Long term equity investments	0	0
Total assets	462,207	442,667
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring
Fair value of financial instruments
Cash and cash equivalents	0	0
Debt securities (government)	0	0
Short term equity investments	0
Long term equity investments	0	0
Total assets	$ 0	$ 0
[1] The condensed consolidated balance sheet at December 31, 2023 has been derived from the audited consolidated financial statements at that date.

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