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Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Fair Value Measurements
Short-term investments (U.S. Government Securities and Agency Investments)	$ 247,220		$ 228,802
Unrealized loss on forward exchange contracts	100	$ (457)
Level 2 \| Foreign Exchange Contract [Member] \| Estimate of fair value measurement
Fair Value Measurements
Unrealized loss on forward exchange contracts	100
Recurring \| Estimate of fair value measurement
Fair Value Measurements
Long-term investments (U.S. Government Securities and Agency Investments)			182,396
Total	518,962		504,981
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)	96,813		93,348
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)	247,220		228,802
Long-term investments (U.S. Government Securities and Agency Investments)	174,829
Recurring \| Foreign Exchange Contract [Member] \| Estimate of fair value measurement
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	100		435
Recurring \| Level 1
Fair Value Measurements
Long-term investments (U.S. Government Securities and Agency Investments)			182,396
Total	518,862		504,546
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)	96,813		93,348
Recurring \| Level 1 \| U.S. Government Securities and Agency Investments
Fair Value Measurements
Short-term investments (U.S. Government Securities and Agency Investments)	247,220		228,802
Long-term investments (U.S. Government Securities and Agency Investments)	174,829
Recurring \| Level 2
Fair Value Measurements
Total			435
Unrealized loss on forward exchange contracts	100
Recurring \| Level 2 \| Foreign Exchange Contract [Member]
Fair Value Measurements
Mark-to-market adjustment on forward exchange contracts	$ 100		$ 435
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current