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STOCK-BASED COMPENSATION, Stock Options Outstanding And Exercisable (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Outstanding and Exercisable [Abstract]      
Number of Options Outstanding at December 31 (in shares) 384,435us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions    
Weighted Average Remaining Contractual Life (Years) 10 months 17 days    
Weighted Average Exercise Price $ 10.52us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1    
Aggregate Intrinsic Value $ 6,623,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1    
Lower range limit (in dollars per share)   $ 8.14us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit  
Upper range limit (in dollars per share)   $ 18.34us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit  
Stock-based compensation, aggregate disclosures [Abstract]      
Shares tendered to net share settle (in shares) 0oled_SharesTenderedToNetShareSettleExerciseOfOptions 20,768oled_SharesTenderedToNetShareSettleExerciseOfOptions 5,878oled_SharesTenderedToNetShareSettleExerciseOfOptions
Fair value of shares withheld for tax withholding obligations 2,844,000us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation    
$5.91–9.04 [Member]      
Outstanding and Exercisable [Abstract]      
Number of Options Outstanding at December 31 (in shares) 94,365us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange1Member
   
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term 1 month 6 days    
Weighted Average Exercise Price $ 8.33us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange1Member
   
Aggregate Intrinsic Value 1,832,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange1Member
   
Lower range limit (in dollars per share)   $ 8.14us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange1Member
 
Upper range limit (in dollars per share)   $ 10.04us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange1Member
 
9.43-14.16 [Member]      
Outstanding and Exercisable [Abstract]      
Number of Options Outstanding at December 31 (in shares) 238,800us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange2Member
   
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term 1 year    
Weighted Average Exercise Price $ 10.52us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange2Member
   
Aggregate Intrinsic Value 4,116,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange2Member
   
Lower range limit (in dollars per share)   $ 10.51us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange2Member
 
Upper range limit (in dollars per share)   $ 10.68us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange2Member
 
14.39–18.34 [Member]      
Outstanding and Exercisable [Abstract]      
Number of Options Outstanding at December 31 (in shares) 51,270us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange3Member
   
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term 1 year 8 months 19 days    
Weighted Average Exercise Price $ 14.58us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange3Member
   
Aggregate Intrinsic Value 675,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange3Member
   
Lower range limit (in dollars per share)   $ 12.04us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange3Member
 
Upper range limit (in dollars per share)   $ 18.34us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= oled_ExercisePriceRange3Member
 
Stock Options [Member]      
Stock-based compensation, aggregate disclosures [Abstract]      
Total intrinsic value of stock awards exercised 3,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
4,900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
7,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Compensation expense 0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Value of shares tendered to net share settle exercise of options 0oled_ValueOfSharesTenderedToNetShareSettleExerciseOfOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
1,000,000oled_ValueOfSharesTenderedToNetShareSettleExerciseOfOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
245,000oled_ValueOfSharesTenderedToNetShareSettleExerciseOfOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Shares withheld for tax withholding obligations (in shares) 0us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
7,599us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
15,066us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Fair value of shares withheld for tax withholding obligations $ 0us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 274,000us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
628,000us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember