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DEFINED CONTRIBUTION PLAN (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |  |
Maximum contribution percentage (in hundredths) | 15.00%oled_DefinedContributionPlanMaximumContributionPercentage |  |
Matching percentage (in hundredths) | 50.00%oled_DefinedContributionPlanMatchingPercentage |  |
Matching contribution limit (in hundredths) | 6.00%oled_DefinedContributionPlanMatchingContributionLimit |  |
Contributions to the 401(k) Plan | $ 320 us-gaap_DefinedContributionPlanCostRecognized | $ 290 us-gaap_DefinedContributionPlanCostRecognized | $ 270 us-gaap_DefinedContributionPlanCostRecognized

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- Definition The Company's limit on matching contributions under the 401(k) Plan to the participant, expressed as a percentage of the participant's total compensation. + References No definition available. + Details
Name: | oled_DefinedContributionPlanMatchingContributionLimit
Namespace Prefix: | oled_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The Company's matching percentage of participants' contribution to the 401(k) Plan, limited to a certain amount of the participant's total compensation. + References No definition available. + Details
Name: | oled_DefinedContributionPlanMatchingPercentage
Namespace Prefix: | oled_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The maximum contribution percentage of total compensation that participants in the 401(k) Plan may contribute, not to exceed the limit as defined in the Code. + References No definition available. + Details
Name: | oled_DefinedContributionPlanMaximumContributionPercentage
Namespace Prefix: | oled_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration