Cash Equivalents and Marketable Securities - Amortized Cost, Unrealized Gains and Losses, and Estimated Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Cash equivalents:
Amortized Cost	$ 28,092	$ 29,023
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	28,092	29,023
Marketable securities:
Amortized Cost	314,758	340,187
Unrealized Gain	232	1,257
Unrealized Loss	(568)	(15)
Estimated Fair Value	314,422	341,429
Total
Amortized Cost	342,850	369,210
Unrealized Gain	232	1,257
Unrealized Loss	(568)	(15)
Estimated Fair Value	342,514	370,452
Certificates of deposit
Marketable securities:
Amortized Cost	1,277	905
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	1,277	905
Commercial paper
Marketable securities:
Amortized Cost	9,643	1,862
Unrealized Gain	0	1
Unrealized Loss	(12)	0
Estimated Fair Value	9,631	1,863
Corporate bonds
Marketable securities:
Amortized Cost	257,901	286,553
Unrealized Gain	202	1,048
Unrealized Loss	(445)	(15)
Estimated Fair Value	257,658	287,586
U.S. Treasury securities
Marketable securities:
Amortized Cost	14,226	6,720
Unrealized Gain	0	36
Unrealized Loss	(81)	0
Estimated Fair Value	14,145	6,756
Asset-backed securities
Marketable securities:
Amortized Cost	31,711	44,147
Unrealized Gain	30	172
Unrealized Loss	(30)	0
Estimated Fair Value	31,711	44,319
Money market funds
Cash equivalents:
Amortized Cost	26,845	29,023
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	26,845	$ 29,023
Corporate bonds
Cash equivalents:
Amortized Cost	1,247
Unrealized Gain	0
Unrealized Loss	0
Estimated Fair Value	$ 1,247

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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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Amount, before tax, of unrealized loss 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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Amortized cost of 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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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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Amount of 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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