Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets
Marketable equity securities	$ 80,575	$ 4,490
Estimated fair value of available-for-sale debt securities	49,785
Securities held in NQDC trust	75,671	55,605
Foreign currency exchange contracts	9,327	5,306
Total Assets	706,341	613,774
Money market funds [Member]
Assets
Money market funds	490,983	548,373
Fair Value Measurements, Level 1 [Member]
Assets
Marketable equity securities	80,575	4,490
Estimated fair value of available-for-sale debt securities	0
Securities held in NQDC trust	75,671	55,605
Foreign currency exchange contracts	0	0
Total Assets	647,229	608,468
Fair Value Measurements, Level 1 [Member] \| Money market funds [Member]
Assets
Money market funds	490,983	548,373
Fair Value Measurements, Level 2 [Member]
Assets
Marketable equity securities	0	0
Estimated fair value of available-for-sale debt securities	49,785
Securities held in NQDC trust	0	0
Foreign currency exchange contracts	9,327	5,306
Total Assets	59,112	5,306
Fair Value Measurements, Level 2 [Member] \| Money market funds [Member]
Assets
Money market funds	0	0
Fair Value Measurements, Level 3 [Member]
Assets
Marketable equity securities	0	0
Estimated fair value of available-for-sale debt securities	0
Securities held in NQDC trust	0	0
Foreign currency exchange contracts	0	0
Total Assets	0	0
Fair Value Measurements, Level 3 [Member] \| Money market funds [Member]
Assets
Money market funds	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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