GOODWILL AND INTANGIBLE ASSETS - Acquired Technology - Additional Information (Details) € in Millions					3 Months Ended		6 Months Ended
	Jun. 28, 2016 USD ($) patent	Jun. 28, 2016 EUR (€) patent	Jul. 23, 2012 USD ($) patent	Mar. 09, 2011	Jun. 30, 2018 USD ($) patent	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) patent	Jun. 30, 2017 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization related to acquired technology							$ 10,986,000	$ 10,987,000
Future amortization expense, remainder of 2018					$ 20,600,000		20,600,000
Future amortization expense, 2019					20,500,000		20,500,000
Future amortization expense, 2020					20,500,000		20,500,000
Future amortization expense, 2021					20,500,000		20,500,000
Future amortization expense, 2022					15,800,000		15,800,000
Future amortization expense, thereafter					33,600,000		33,600,000
Patent Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization related to acquired technology					$ 5,100,000	$ 5,100,000	$ 10,300,000	$ 10,300,000
Licensing Agreements [Member] | Motorola [Member]
Finite-Lived Intangible Assets [Line Items]
Number of patents under license agreement | patent					74		74
Amortization period of acquired intangible assets (in years)				7 years 6 months
Patents [Member] | FUJIFILM [Member]
Finite-Lived Intangible Assets [Line Items]
Number of patents acquired (more than) | patent			1,200
Assigned value of acquired intangible assets			$ 105,000,000
Cash paid for OLED patents			$ 4,500,000
OLED patents useful life			10 years
Patents [Member] | BASF [Member]
Finite-Lived Intangible Assets [Line Items]
Number of patents acquired (more than) | patent	500	500
Assigned value of acquired intangible assets	$ 95,800,000	€ 86.8
Cash paid for OLED patents	$ 217,000
OLED patents useful life	10 years	10 years