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EQUITY AND CASH COMPENSATION UNDER THE PPG AGREEMENTS (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Long-term Purchase Commitment [Line Items] |  |
Percent Of Services Payable In Cash Or Shares | 50.00%oled_LongTermPurchaseCommitmentPercentOfServicesPayableInCashOrShares |
Issuance of common stock in connection with materials and license agreements (in shares) | 0 oled_IssuanceOfCommonStockInConnectionWithMaterialsAndLicenseAgreementsShares | 0 oled_IssuanceOfCommonStockInConnectionWithMaterialsAndLicenseAgreementsShares
New OLED Materials Agreement and OLED Materials Agreement [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Minimum average closing price of common stock (in dollars per share) | 20.00 oled_MinimumAverageClosingPriceOfCommonStock / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember |
Charges to expense for cash portion of reimbursement of expenses | 1.6 oled_ChargesToExpenseForCashPortionOfReimbursementOfExpenses / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember | 3.5 oled_ChargesToExpenseForCashPortionOfReimbursementOfExpenses / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember

X
- Definition Charges to expense for the cash portion of the reimbursement of expenses and work performed, excluding amounts paid for commercial chemicals. + References No definition available. + Details
Name: | oled_ChargesToExpenseForCashPortionOfReimbursementOfExpenses
Namespace Prefix: | oled_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Number of new stock issued during the period in connection with materials and license agreements. + References No definition available. + Details
Name: | oled_IssuanceOfCommonStockInConnectionWithMaterialsAndLicenseAgreementsShares
Namespace Prefix: | oled_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Long-Term Purchase Commitment, Percent Of Services Payable In Cash Or Shares + References No definition available. + Details
Name: | oled_LongTermPurchaseCommitmentPercentOfServicesPayableInCashOrShares
Namespace Prefix: | oled_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The minimum average closing price of the Company's common stock during a specified number of days prior to the end of each calendar half-year period ending on March 31 and September 30. If the average closing price is less than this amount, the Company is required to compensate PPG Industries in cash. + References No definition available. + Details
Name: | oled_MinimumAverageClosingPriceOfCommonStock
Namespace Prefix: | oled_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |