Short-Term Investments - Estimated Fair Value of Short-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Available-for-sale securities:
Amortized Cost	$ 250,486	$ 368,657
Gross Unrealized Gain	825	759
Gross Unrealized Loss	(62)	(321)
Estimated Fair Value	251,249	369,095
United States Government-sponsored enterprises
Available-for-sale securities:
Amortized Cost	105,369	133,139
Gross Unrealized Gain	640	275
Gross Unrealized Loss	0	(134)
Estimated Fair Value	106,009	133,280
United States Treasury securities
Available-for-sale securities:
Amortized Cost	72,791	103,645
Gross Unrealized Gain	63	197
Gross Unrealized Loss	(51)	(140)
Estimated Fair Value	72,803	103,702
Commercial paper
Available-for-sale securities:
Amortized Cost	1,726	23,225
Gross Unrealized Gain	0	39
Gross Unrealized Loss	(1)	0
Estimated Fair Value	1,725	23,264
Corporate debt securities
Available-for-sale securities:
Amortized Cost	70,600	105,635
Gross Unrealized Gain	122	248
Gross Unrealized Loss	(10)	(47)
Estimated Fair Value	$ 70,712	105,836
Foreign government bonds
Available-for-sale securities:
Amortized Cost		3,013
Gross Unrealized Gain		0
Gross Unrealized Loss		0
Estimated Fair Value		$ 3,013

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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