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Summary of Weighted Average Assumptions to Value Stock Options Granted (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term of options 0 years 0 years 5 years 0 years
Exercise price $ 0.02 $ 0 $ 0.02 $ 0
Expected volatility 0.00% 0.00% 187.00% 0.00%
Expected dividends 0.00% 0.00% 0.00% 0.00%
Risk-free interest rate 0.00% 0.00% 1.64% 0.00%
Forfeitures $ 0 $ 0 $ 0 $ 0