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SHAREHOLDERS' EQUITY - Deferred Compensation Arrangement (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Deferred Compensation Arrangement with Employees and Non-Employees, Share-Based Payments [Line Items] |  |
Fair value of shares withheld for tax withholding obligations | 4,970 us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation |
Employees and Non Employee Members of Scientific Advisory Board [Member] |  |
Deferred Compensation Arrangement with Employees and Non-Employees, Share-Based Payments [Line Items] |  |
Shares issued (in shares) | 35,205 us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued / us-gaap_TitleOfIndividualAxis = oled_EmployeesAndNonEmployeeMembersOfScientificAdvisoryBoardMember | 31,301 us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued / us-gaap_TitleOfIndividualAxis = oled_EmployeesAndNonEmployeeMembersOfScientificAdvisoryBoardMember
Employees [Member] |  |
Deferred Compensation Arrangement with Employees and Non-Employees, Share-Based Payments [Line Items] |  |
Fair value of shares issued | 967 us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember | 1,046 us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember
Shares withheld for tax withholding obligations (in shares) | 9,565 us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember | 8,071 us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember
Fair value of shares withheld for tax withholding obligations | 346 us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember | 271 us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation / us-gaap_TitleOfIndividualAxis = oled_EmployeesMember
Non Employee Members of Scientific Advisory Board [Member] |  |
Deferred Compensation Arrangement with Employees and Non-Employees, Share-Based Payments [Line Items] |  |
Fair value of shares issued | 300 us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued / us-gaap_TitleOfIndividualAxis = oled_NonEmployeeMembersOfScientificAdvisoryBoardMember | 300 us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued / us-gaap_TitleOfIndividualAxis = oled_NonEmployeeMembersOfScientificAdvisoryBoardMember

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- Details
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Namespace Prefix: | oled_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References No definition available. + Details
Name: | us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The total fair value of shares issued during the period under a deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares issued pursuant to the terms of a deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. + References No definition available. + Details
Name: | us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_TitleOfIndividualAxis=oled_EmployeesAndNonEmployeeMembersOfScientificAdvisoryBoardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_TitleOfIndividualAxis=oled_EmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=oled_NonEmployeeMembersOfScientificAdvisoryBoardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |