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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)				3 Months Ended
	Jun. 28, 2016	Jul. 23, 2012	Mar. 09, 2011	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
License agreement, extended option term				2 years
License fee agreement, term of agreement				5 years
Taxes, other				$ 6,000	$ 56,000
Recognized income tax positions measured at likelihood of realization description				Recognized income tax positions are measured at the largest amount of which the likelihood of realization is greater than 50%.
Increase in deferred revenue				$ 30,331,000	106,000
Deferred revenue offset by reduction of retained earnings						$ (17,894,000)
Revenues				43,572,000	$ 55,566,000
Revenue from Contracts with Customers - ASU No. 2014-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase in deferred revenue				21,300,000
Deferred revenue offset by reduction of retained earnings				17,900,000
Deferred revenue offset by reduction of retained earnings, tax amount				3,100,000
Unbilled receivables				300,000
Revenues				$ 24,700,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Recognized income tax positions measured at percentage of likelihood of realization				50.00%
Licensing Agreements [Member] | Motorola [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period of acquired intangible assets (in years)			7 years 6 months
Patents [Member] | FUJIFILM [Member]
Summary Of Significant Accounting Policies [Line Items]
OLED patents useful life		10 years
Patents [Member] | BASF [Member]
Summary Of Significant Accounting Policies [Line Items]
OLED patents useful life	10 years
Other Intangible Assets [Member] | Adesis, Inc. [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period of acquired intangible assets (in years)				10 years
Other Intangible Assets [Member] | Adesis, Inc. [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period of acquired intangible assets (in years)				15 years
OLED Patent License [Member] | Tianma [Member]
Summary Of Significant Accounting Policies [Line Items]
Agreement period				5 years
Material Purchase Agreements [Member] | Tianma [Member]
Summary Of Significant Accounting Policies [Line Items]
Agreement period				5 years

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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