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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Significant Noncash Transactions (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Other Significant Noncash Transactions [Line Items]      
Unrealized (loss) gain on available-for-sale securities $ (7,000)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss $ (10,000)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss $ (31,000)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss
Cash paid for income taxes 8,000,000us-gaap_IncomeTaxesPaid 6,600,000us-gaap_IncomeTaxesPaid 5,300,000us-gaap_IncomeTaxesPaid
Common stock issued to Board of Directors and Scientific Advisory Board that was earned in a previous period [Member]      
Other Significant Noncash Transactions [Line Items]      
Other non-cash activities 323,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToBoardOfDirectorsAndScientificAdvisoryBoardThatWasEarnedInPreviousPeriodMember
315,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToBoardOfDirectorsAndScientificAdvisoryBoardThatWasEarnedInPreviousPeriodMember
328,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToBoardOfDirectorsAndScientificAdvisoryBoardThatWasEarnedInPreviousPeriodMember
Common stock issued to employees that was accrued for in a previous period, net of shares withheld for taxes [Member]      
Other Significant Noncash Transactions [Line Items]      
Other non-cash activities 749,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToEmployeesThatWasAccruedForInPreviousPeriodNetOfSharesWithheldForTaxesMember
282,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToEmployeesThatWasAccruedForInPreviousPeriodNetOfSharesWithheldForTaxesMember
252,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= oled_CommonStockIssuedToEmployeesThatWasAccruedForInPreviousPeriodNetOfSharesWithheldForTaxesMember
Other Capitalized Property Plant and Equipment [Member]      
Other Significant Noncash Transactions [Line Items]      
Other non-cash activities $ 965,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember
$ 420,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember
$ 165,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember