SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended
	Jun. 28, 2016	Jul. 23, 2012	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
License agreement, extended option term					2 years
License fee agreement, term of agreement					5 years
Taxes, other			$ 65,000	$ 35,000	$ 120,000	$ 64,000
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%.
Operating lease, right-of-use asset			8,800,000		$ 8,800,000
Operating lease, liabilities			$ 8,788,000		$ 8,788,000
Leases - ASU No. 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset							$ 8,300,000
Operating lease, liabilities							$ 8,300,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Recognized income tax positions measured at percentage of likelihood of realization					50.00%
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
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