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CASH, CASH EQUIVALENTS AND INVESTMENTS - Additional Information (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Cash And Cash Equivalents [Line Items] |  |
Minority investment, carrying value | $ 18.1 | $ 14.0

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- Definition Minority investment carrying value. + References No definition available. + Details
Name: | oled_MinorityInvestmentCarryingValue
Namespace Prefix: | oled_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration