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Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Fair Value Measurements
Short-term investments (U.S. Government Securities and Agency Investments)	$ 262,059		$ 447,831
Mark-to-market adjustment on forward exchange contracts	(585)	$ (583)
Level 2 | Forward exchange contracts | Estimate of fair value measurement
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	(600)
Recurring | Estimate of fair value measurement
Fair Value Measurements
Total	554,917		529,883
Recurring | Forward exchange contracts | Estimate of fair value measurement
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	(585)		267
Recurring | Money market funds, U.S. Government Securities and Agency Investments | Estimate of fair value measurement
Fair Value Measurements
Cash equivalents (money market funds, U.S. Government Securities and Agency Investments)	150,229		81,320
Recurring | U.S. Government Securities and Agency Investments | Estimate of fair value measurement
Fair Value Measurements
Short-term investments (U.S. Government Securities and Agency Investments)	262,059		448,296
Long-term investments (U.S. Government Securities and Agency Investments)	143,214
Recurring | Level 1
Fair Value Measurements
Total	555,502		529,616
Recurring | Level 1 | Money market funds, U.S. Government Securities and Agency Investments
Fair Value Measurements
Cash equivalents (money market funds, U.S. Government Securities and Agency Investments)	150,229		81,320
Recurring | Level 1 | U.S. Government Securities and Agency Investments
Fair Value Measurements
Short-term investments (U.S. Government Securities and Agency Investments)	262,059		448,296
Long-term investments (U.S. Government Securities and Agency Investments)	143,214
Recurring | Level 2
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	(585)
Total			267
Recurring | Level 2 | Forward exchange contracts
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	$ (585)		$ 267

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of asset after deduction of liability.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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