The maximum percentage of employees' base compensation that can be allocated under the plan.

No definition available.

Name:	oled_EmployeeStockOwnershipPlanEsopMaximumAllocationOfBaseCompensation
Namespace Prefix:	oled_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- 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

- 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_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- 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

Name:	us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

+ References

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis=us-gaap_EmployeeStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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
Employee Stock Purchase Plan (ESPP) [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Reserved for issuance (in shares)			1,000,000
Purchase period (in months)	3 months
Percentage of market value (in hundredths)	85.00%
Maximum allocation of base compensation (in hundredths)	10.00%
Maximum shares per purchase date (in shares)	12,500
Maximum value per calendar year, per employee	25,000
Common stock issued (in shares)	3,790	3,164
Proceeds from common stock issued	90,000	86,000
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	14,000
Employee Stock Purchase Plan (ESPP) [Member] \| Research and Development Expense [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	$ 13,000	$ 14,000