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2. Cash, Cash Equivalents, and Marketable Securities (Details) - Cash, Cash Equivalents, and Marketable Securities - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents		$ 1,124,740	$ 1,621,376
Marketable securities		29,098	171,583
Total cash, cash equivalents, and marketable securities		1,153,838	1,792,959
Restricted cash - current		48,257	8,262
Restricted cash - noncurrent		3,606	3,613
Restricted cash equivalents - noncurrent		3,480	4,972
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	$ 1,716,577	1,180,083	1,638,223	$ 1,965,069
Marketable securities, sale proceeds	67,500
Marketable securities, realized gain	$ 100
Time deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Marketable securities		20,025	162,836
U.S. debt [Member]
Debt Securities, Available-for-sale [Line Items]
Marketable securities		9,073	8,747
Cash [Member]
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents		1,085,499	1,094,796
Money market funds [Member]
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents		$ 39,241	$ 526,580