Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 844,524	$ 748,537
Total adjusted cost	1,994,304	2,221,688
Unrealized Gains	4,738	5,208
Unrealized Losses	7	693
Fair Value, Subtotal	1,999,035	2,226,203
Current Investments	701,968	674,378
Long-term Investments	448,206	799,023
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	744,101	652,568
Total adjusted cost	1,874,428	2,105,555
Unrealized Gains	4,344	4,947
Unrealized Losses	4	693
Fair Value, Subtotal	1,878,768	2,109,809
Current Investments	694,922	670,128
Long-term Investments	435,405	782,859
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	19,453	20,164
Unrealized Gains	394	261
Unrealized Losses	3
Fair Value	19,844	20,425
Current Investments	7,046	4,250
Long-term Investments	12,801	16,164
U.S. Treasury securities \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	1,091,959	1,404,777
Unrealized Gains	4,270	4,831
Unrealized Losses	4	693
Fair Value	1,096,225	1,408,915
Current Investments	656,554	635,392
Long-term Investments	435,405	769,385
Corporate debt securities \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	38,368	48,210
Unrealized Gains	74	116
Fair Value	38,442	48,326
Current Investments	38,368	34,736
Long-term Investments		13,474
Corporate debt securities \| Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	15,601	16,401
Unrealized Gains		11
Unrealized Losses	3
Fair Value	15,598	16,412
Current Investments	2,800	2,000
Long-term Investments	12,801	14,401
Notes receivable \| Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	3,852	3,763
Unrealized Gains	394	250
Fair Value	4,246	4,013
Current Investments	4,246	2,250
Long-term Investments		1,763
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	100,423	95,969
Money market funds \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	665,643	574,689
Time deposits \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 78,458	$ 77,879

Cash And Cash Equivalents At Carrying Value And Debt Securities, Held-to-Maturity, Amortized Cost

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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