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2. Cash, Cash Equivalents, and Marketable Securities (Details) - Cash, Cash Equivalents, and Marketable Securities - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents	$ 837,641	$ 1,621,376
Marketable securities	53,119	171,583
Total cash, cash equivalents, and marketable securities	890,760	1,792,959
Restricted cash - current	0	8,262
Restricted cash - noncurrent	3,618	3,613
Restricted cash equivalents - noncurrent	2,761	4,972
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	844,020	1,638,223	$ 1,702,923	$ 1,965,069
Time deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Marketable securities	44,199	162,836
U.S. debt [Member]
Debt Securities, Available-for-sale [Line Items]
Marketable securities	8,920	8,747
Cash [Member]
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents	591,907	1,094,796
Money market funds [Member]
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents	$ 245,734	$ 526,580