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SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN - Additional Information (Details) - Supplemental Executive Retirement Plan [Member] $ in Thousands | 3 Months Ended
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Mar. 31, 2024 USD ($) Participant
Defined Benefit Plan Disclosure [Line Items] |
Number of participants | Participant | 8
Benefit Payments | $ | $ 504,000

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- Definition The number of participants in the defined benefit plan. + References No definition available. + Details
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Namespace Prefix: | oled_
Data Type: | xbrli:integerItemType
Balance Type: | na
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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of expense for employee benefit and equity-based compensation. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |