EQUITY AND CASH COMPENSATION UNDER THE PPG INDUSTRIES AGREEMENTS (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Development Agreement [Member]
Long-term Purchase Commitment [Line Items]
Time period	5
Supply Agreement [Member]
Long-term Purchase Commitment [Line Items]
Time period	7
New OLED Materials Agreement and OLED Materials Agreement [Member]
Long-term Purchase Commitment [Line Items]
Specified form of payment	Up to 50%
Minimum average closing price of common stock (in dollars per share)	$ 20.00
Issuance of common stock in connection with materials and license agreements (in shares)		181
Charges to expense for issuance of common stock in connection with materials and license agreements		$ 9,000
Charges to expense for cash portion of reimbursement of expenses	$ 1,300,000	$ 1,400,000