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EQUITY AND CASH COMPENSATION UNDER THE PPG INDUSTRIES AGREEMENTS (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Long-term Purchase Commitment [Line Items]        
Specified form of payment for the balance payable in cash or shares of the Company's common stock 50.00% 50.00%    
Development Agreement [Member]
        
Long-term Purchase Commitment [Line Items]        
Time period (in years)   5 years    
Supply Agreement [Member]
        
Long-term Purchase Commitment [Line Items]        
Time period (in years)   7 years    
New OLED Materials Agreement and OLED Materials Agreement [Member]
        
Long-term Purchase Commitment [Line Items]        
Minimum average closing price of common stock (in dollars per share)       $ 20.00
Charges to expense for cash portion of reimbursement of expenses $ 1.6 $ 4.9 $ 4.0  
Shares issued for services to PPG   0 0