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Fair Value Measurements - Cost, Unrealized Gains or Losses, and Fair Value by Investment Type (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Cost, Unrealized Gains or Losses, and Fair Value by Investment
Cost	$ 191,467
Unrealized Gain	74
Unrealized (Loss)	(2)
Fair Value	191,539
Money market funds
Cost, Unrealized Gains or Losses, and Fair Value by Investment
Cost	92,289	$ 125,549
Fair Value	92,289	$ 125,549
U.S. government agency securities
Cost, Unrealized Gains or Losses, and Fair Value by Investment
Cost	6,748
Unrealized Gain	4
Fair Value	6,752
U.S. treasury securities
Cost, Unrealized Gains or Losses, and Fair Value by Investment
Cost	53,347
Unrealized Gain	33
Unrealized (Loss)	(1)
Fair Value	53,379
Commercial paper and corporate notes
Cost, Unrealized Gains or Losses, and Fair Value by Investment
Cost	39,083
Unrealized Gain	37
Unrealized (Loss)	(1)
Fair Value	$ 39,119

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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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