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Options Outstanding Vested and Remain Unvested - Based Compensation Plans (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Number of Shares, Vested 9,470,417    
Number of Shares, Unvested 10,021,250    
Number of Shares, Total 19,491,667 15,795,000 14,695,000
Weighted Average Exercise Price, Vested $ 0.24    
Weighted Average Exercise Price, Unvested $ 0.13    
Weighted Average Remaining Contractual Term in Years, Vested 6 years 8 months 16 days    
Weighted Average Remaining Contractual Term in Years, Unvested 8 years 10 months 17 days    
Aggregate Intrinsic Value (1), Vested $ 0 [1]    
Aggregate Intrinsic Value (1), Unvested $ 0 [1]    
Weighted Average ExercisePrice, Total $ 0.18 $ 0.20 $ 0.37
Weighted-Average Remaining ContractualTerm 8 years 2 months 12 days 8 years 1 month 28 days  
[1] These amounts represent the excess, if any, between the exercise price and $0.05, the closing market price of the Company's common stock on December 31, 2012 as quoted on the Over-the-Counter Bulletin Board under the symbol "SCIE.OB".