REVENUE RECOGNITION - Summary of Significant Changes in Unbilled Receivables and Deferred Liabilities Balances (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue (Increase) Decrease
Balance at December 31, 2018	$ (122,567)	$ (38,883)
Adoption of Topic 606 on January 1, 2018		(21,307)
Adjusted balance on January 1, 2018		(60,190)
Revenue recognized that was previously included in deferred revenue	133,394	64,562
Increases due to cash received	(157,321)	(130,639)
Cumulative catch-up adjustment arising from changes in estimates of transaction price	1,632	3,700
Net change	(22,295)	(62,377)
Balance at December 31, 2019	(144,862)	(122,567)
Unbilled Receivables Increase (Decrease)
Balance at December 31, 2018	1,020	70
Adoption of Topic 606 on January 1, 2018		307
Adjusted balance on January 1, 2018		377
Unbilled receivables recognized	1,834	2,024
Transferred to receivables from unbilled receivables	(1,492)	(1,381)
Net change	342	643
Balance at December 31, 2019	$ 1,362	$ 1,020

Adjusted balance deferred revenue.

No definition available.

Name:	oled_AdjustedBalanceDeferredRevenue
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Adjusted balance unbilled receivables.

+ References

No definition available.

+ Details

Name:	oled_AdjustedBalanceUnbilledReceivables
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Cumulative effect of new accounting principle in period of adoption for deferred revenue.

+ References

No definition available.

+ Details

Name:	oled_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoptionForDeferredRevenue
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Cumulative effect of new accounting principle in period of adoption for unbilled receivables.

+ References

No definition available.

+ Details

Name:	oled_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoptionForUnbilledReceivables
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Increase (decrease) in unbilled receivables.

+ References

No definition available.

+ Details

Name:	oled_IncreaseDecreaseInUnbilledReceivablesAbstract
Namespace Prefix:	oled_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Increases due to cash received.

+ References

No definition available.

+ Details

Name:	oled_IncreasesDueToCashReceived
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Net increase (decrease) in deferred revenue.

+ References

No definition available.

+ Details

Name:	oled_NetIncreaseDecreaseInDeferredRevenue
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Transferred to receivables from unbilled receivables.

+ References

No definition available.

+ Details

Name:	oled_TransferredToReceivablesFromUnbilledReceivables
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Unbilled receivables increase (decrease), net.

+ References

No definition available.

+ Details

Name:	oled_UnbilledReceivablesIncreaseDecreaseNet
Namespace Prefix:	oled_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in estimate of transaction price which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

+ Details

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

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045

+ Details

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

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 310
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118261985&loc=d3e55302-109406

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_UnbilledContractsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant