FAIR VALUE - Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Marketable equity securities	$ 93,591	$ 80,575
Mortgage-backed and asset-backed securities	51,008	49,785
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	81,464	75,671
Foreign currency exchange contracts		9,327
Total Assets	698,946	706,341
Liabilities
Foreign currency exchange contracts	345
Total Liabilities	345
Mortgage-backed and asset-backed securities
Assets
Mortgage-backed and asset-backed securities	51,008	49,785
Money Market Funds
Assets
Money market funds	472,883	490,983
Fair Value Measurements, Level 1 [Member]
Assets
Marketable equity securities	93,591	80,575
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	81,464	75,671
Foreign currency exchange contracts		0
Total Assets	647,938	647,229
Liabilities
Foreign currency exchange contracts	0
Total Liabilities	0
Fair Value Measurements, Level 1 [Member] \| Mortgage-backed and asset-backed securities
Assets
Mortgage-backed and asset-backed securities	0
Fair Value Measurements, Level 1 [Member] \| Money Market Funds
Assets
Money market funds	472,883	490,983
Fair Value Measurements, Level 2 [Member]
Assets
Marketable equity securities	0	0
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	0	0
Foreign currency exchange contracts		9,327
Total Assets	51,008	59,112
Liabilities
Foreign currency exchange contracts	345
Total Liabilities	345
Fair Value Measurements, Level 2 [Member] \| Mortgage-backed and asset-backed securities
Assets
Mortgage-backed and asset-backed securities	51,008
Fair Value Measurements, Level 2 [Member] \| Money Market Funds
Assets
Money market funds	0	0
Fair Value Measurements, Level 3 [Member]
Assets
Marketable equity securities	0	0
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	0	0
Foreign currency exchange contracts		0
Total Assets	0	0
Liabilities
Foreign currency exchange contracts	0
Total Liabilities	0
Fair Value Measurements, Level 3 [Member] \| Mortgage-backed and asset-backed securities
Assets
Mortgage-backed and asset-backed securities	0
Fair Value Measurements, Level 3 [Member] \| Money Market Funds
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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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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Fair value of financial and nonfinancial obligations.

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