Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	$ 83,749	$ 81,573
Commercial paper
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	1,959	1,953
U.S. government agency bonds
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	10,433	7,857
Recurring
Liabilities that are measured at fair value on a recurring basis
Assets, fair value	153,594	141,030
Deferred compensation plan liabilities	1,307	306
Total liabilities	1,307	306
Recurring \| Level 1
Liabilities that are measured at fair value on a recurring basis
Assets, fair value	23,373	43,307
Deferred compensation plan liabilities	0	0
Total liabilities	0	0
Recurring \| Level 2
Liabilities that are measured at fair value on a recurring basis
Assets, fair value	130,221	97,723
Deferred compensation plan liabilities	1,307	306
Total liabilities	1,307	306
Recurring \| Level 3
Liabilities that are measured at fair value on a recurring basis
Assets, fair value	0	0
Deferred compensation plan liabilities	0	0
Total liabilities	0	0
Recurring \| Commercial paper
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	1,959	1,953
Recurring \| Commercial paper \| Level 1
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| Commercial paper \| Level 2
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	1,959	1,953
Recurring \| Commercial paper \| Level 3
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| Corporate notes
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	71,357	71,763
Recurring \| Corporate notes \| Level 1
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| Corporate notes \| Level 2
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	71,357	71,763
Recurring \| Corporate notes \| Level 3
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| U.S. government agency bonds
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	10,433	7,857
Recurring \| U.S. government agency bonds \| Level 1
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| U.S. government agency bonds \| Level 2
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	10,433	7,857
Recurring \| U.S. government agency bonds \| Level 3
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| U.S. government securities
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	46,472	16,150
Recurring \| U.S. government securities \| Cash and cash equivalents
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	46,500	16,200
Recurring \| U.S. government securities \| Level 1
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| U.S. government securities \| Level 2
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	46,472	16,150
Recurring \| U.S. government securities \| Level 3
Liabilities that are measured at fair value on a recurring basis
Debt securities, fair value	0	0
Recurring \| Money market funds
Liabilities that are measured at fair value on a recurring basis
Money market funds	23,373	43,307
Recurring \| Money market funds \| Level 1
Liabilities that are measured at fair value on a recurring basis
Money market funds	23,373	43,307
Recurring \| Money market funds \| Level 2
Liabilities that are measured at fair value on a recurring basis
Money market funds	0	0
Recurring \| Money market funds \| Level 3
Liabilities that are measured at fair value on a recurring basis
Money market funds	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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Amount 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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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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Fair value of financial and nonfinancial obligations.

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