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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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 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 $ 1.0 $ 1.1 $ 3.3 $ 2.4  
Shares issued for services to PPG     0 0