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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

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Amount of realized gain (loss) on investment.

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Financial Instruments (Details) $ in Thousands	12 Months Ended
Financial Instruments (Details) $ in Thousands	Dec. 31, 2024 USD ($) position item	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Cash, cash equivalents and restricted cash	$ 945,587	$ 642,095	$ 466,091	$ 84,614
Proceeds from investments sold	$ 24,800		248,500
Gross realized gains (losses)			$ (900)
Number of investments sold \| item	1	0
Number of investments, unrealized loss position \| position	6
Credit loss reserve	$ 0	$ 0
Number of investments, unrealized loss position less than 12 months \| position	0
12 Months or Longer, Fair value	$ 17,688
Fair value	17,688
12 Months or Longer, Unrealized loss	(330)
Unrealized loss	(330)
Amortized Cost
Less than or equal to one year	23,019
Total	23,019
Fair Value
Less than or equal to one year	22,689
Total	22,689
Available-for-sale securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	968,606	881,708
Gross Unrealized Gain		14
Gross Unrealized Loss	(330)	(2,745)
Estimated Fair Value	968,276	878,977
Liquid demand deposits
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	945,587	642,095
Estimated Fair Value	945,587	642,095
U.S. Treasury securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost		201,522
Gross Unrealized Gain		14
Gross Unrealized Loss		(1,118)
Estimated Fair Value		200,418
Municipal securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	23,019	38,091
Gross Unrealized Loss	(330)	(1,627)
Estimated Fair Value	22,689	36,464
12 Months or Longer, Fair value	17,688
Fair value	17,688
12 Months or Longer, Unrealized loss	(330)
Unrealized loss	(330)
Cash equivalents \| Available-for-sale securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Estimated Fair Value	945,587	642,095
Short-term investments \| Available-for-sale securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Estimated Fair Value	$ 22,689	$ 236,882