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GOODWILL AND INTANGIBLE ASSETS - Acquired Technology - Additional Information (Details)
€ in Millions
12 Months Ended
Jun. 28, 2016
USD ($)
patent
Jun. 28, 2016
EUR (€)
patent
Jul. 23, 2012
USD ($)
patent
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Finite-Lived Intangible Assets [Line Items]            
Amortization related to acquired technology       $ 21,969,000 $ 21,962,000 $ 21,962,000
Future amortization expense, 2021       20,600,000    
Future amortization expense, 2022       15,800,000    
Future amortization expense, 2023       9,700,000    
Future amortization expense, 2024       9,600,000    
Future amortization expense, 2025       9,600,000    
Future amortization expense, thereafter       4,900,000    
Patent Technology [Member]            
Finite-Lived Intangible Assets [Line Items]            
Amortization related to acquired technology       $ 20,600,000 $ 20,600,000 $ 20,600,000
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     $ 105,000,000.0      
Cash paid for OLED patents     $ 4,500,000      
OLED patents useful life     10 years 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   10 years