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STOCK-BASED COMPENSATION, Employee Stock Purchase Plan (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Jun. 25, 2009
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Proceeds from common stock issued | $ 114,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  |
Employee Stock Purchase Plan (ESPP) [Member] |  |  |
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Reserved for issuance (in shares) |  |  | 1,000,000 us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember
Purchase period (in months) | 3 months |  |
Percentage of market value (in hundredths) | 85.00%oled_EmployeeStockOwnershipPlanEsopPercentageOfMarketValue / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |  |
Maximum allocation of base compensation (in hundredths) | 10.00%oled_EmployeeStockOwnershipPlanEsopMaximumAllocationOfBaseCompensation / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |  |
Maximum shares per purchase date (in shares) | 12,500 oled_EmployeeStockOwnershipPlanEsopMaximumSharesPerPurchaseDate / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |  |
Maximum value per calendar year, per employee | 25,000 oled_EmployeeStockOwnershipPlanEsopMaximumValuePerCalendarYear / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |  |
Common stock issued (in shares) | 3,790 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember | 3,164 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |
Proceeds from common stock issued | 90,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember | 86,000 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember |
Employee Stock Purchase Plan (ESPP) [Member] | Selling, General and Administrative Expenses [Member] |  |  |
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Charges to expense | 11,000 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember | 14,000 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember |
Employee Stock Purchase Plan (ESPP) [Member] | Research and Development Expense [Member] |  |  |
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Charges to expense | $ 13,000 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember | $ 14,000 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense / us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis = us-gaap_EmployeeStockMember / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |

X
- Definition The maximum percentage of employees' base compensation that can be allocated under the plan. + References No definition available. + Details
Name: | oled_EmployeeStockOwnershipPlanEsopMaximumAllocationOfBaseCompensation
Namespace Prefix: | oled_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The maximum number of shares that may be purchased on a given purchase date, under the plan. + References No definition available. + Details
Name: | oled_EmployeeStockOwnershipPlanEsopMaximumSharesPerPurchaseDate
Namespace Prefix: | oled_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition The maximum value of shares that may be purchased by a single employee during a given calendar year, under the plan. + References No definition available. + Details
Name: | oled_EmployeeStockOwnershipPlanEsopMaximumValuePerCalendarYear
Namespace Prefix: | oled_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The percentage of the lesser of the price per share of common stock on the first day of the purchase period, or the last day of the purchase period, at which eligible employees may purchase shares under the plan. + References No definition available. + Details
Name: | oled_EmployeeStockOwnershipPlanEsopPercentageOfMarketValue
Namespace Prefix: | oled_
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Balance Type: | na
Period Type: | duration

X
- Definition The duration (in consecutive months) of purchase periods as defined by the the plan. + References No definition available. + Details
Name: | oled_EmployeeStockOwnershipPlanEsopPurchasePeriod
Namespace Prefix: | oled_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of plan compensation cost recognized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
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- Details
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- Definition Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
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Period Type: | instant

X
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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X
- Definition Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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