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Thin Film Japan Distribution Agreement (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2013
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Installment
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2004
Thin Film Japan Distribution Agreement [Abstract]              
License fee recorded as deferred revenue $ 2,379,000 $ 235,000   $ 235,000   $ 2,635,000 $ 1,500,000
Period before post commercialization in case of termination for proportional refund       3 years      
Milestone payments received       1,250,000      
Payment obligation under termination agreement   1,200,000   1,200,000      
Number of installment payments       6      
Periodic payment under termination agreement       200,000      
Deferred revenues 2,379,000 235,000   235,000   2,635,000 1,500,000
First installment payment   200,000   400,000 0    
Termination fee obligation 1,200,000 800,000   800,000      
Development revenue $ 1,179,000 $ 0 $ 0 $ 1,179,000 $ 0