Cash and cash equivalents maturity period.

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License agreement extended option term.

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License fee agreement, term of agreement.

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Recognized income tax positions measured at percentage of likelihood of realization.

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Summary of significant accounting policies.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Description of the likelihood that an uncertainty in income taxes will not be sustained as a result of the examination by the taxing authority.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)			12 Months Ended
	Jun. 28, 2016	Jul. 23, 2012	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents maturity period			three months or less
Allowance for doubtful accounts			$ 139,000	$ 84,000	$ 77,000
Goodwill impairment loss			$ 0
License agreement, extended option term			2 years
License fee agreement, term of agreement			5 years
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%.
Patents [Member] \| FUJIFILM [Member]
Summary Of Significant Accounting Policies [Line Items]
OLED patents useful life		10 years	10 years
Patents [Member] \| BASF [Member]
Summary Of Significant Accounting Policies [Line Items]
OLED patents useful life	10 years		10 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Recognized income tax positions measured at percentage of likelihood of realization			50.00%
Minimum [Member] \| Other Intangible Assets [Member] \| Adesis, Inc. [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period of acquired intangible assets (in years)			10 years
Maximum [Member] \| Other Intangible Assets [Member] \| Adesis, Inc. [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period of acquired intangible assets (in years)			15 years
Building [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life (in years)			30 years
Building Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life (in years)			15 years
Office, Lab Equipment and Furniture and Fixtures [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life (in years)			3 years
Office, Lab Equipment and Furniture and Fixtures [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life (in years)			7 years
Computer Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life (in years)			3 years