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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
	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)	0oled_IssuanceOfCommonStockInConnectionWithMaterialsAndLicenseAgreementsShares	0oled_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)	20.00oled_MinimumAverageClosingPriceOfCommonStock / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember
Charges to expense for cash portion of reimbursement of expenses	1.6oled_ChargesToExpenseForCashPortionOfReimbursementOfExpenses / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = oled_NewOledMaterialsAgreementAndOledMaterialsAgreementMember	3.5oled_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

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Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of new stock issued during the period in connection with materials and license agreements.

+ References

No definition available.

+ Details

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Namespace Prefix:	oled_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Long-Term Purchase Commitment, Percent Of Services Payable In Cash Or Shares

+ References

No definition available.

+ Details

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Namespace Prefix:	oled_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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

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Namespace Prefix:	oled_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: