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Significant Customers (Details)			3 Months Ended		9 Months Ended
Significant Customers (Details)	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Sharp Electronics Corporation [Member] Display Technologies [Member]	Sep. 30, 2010 Display Technologies [Member]	Sep. 30, 2010 Display Technologies [Member]
Number of significant customers			1	2	3
Percentage of consolidated net sales	10.00%	10.00%