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Benefits Plans (Details 1) (Employee Stock Option [Member], USD $)
In Thousands, except Share data, unless otherwise specified
9 Months Ended
Sep. 30, 2011
Year
Employee Stock Option [Member]
 
Stock options activity under share based payment plans 
Outstanding Shares, December 31, 2010401,870,000
Outstanding, Weighted Average Exercise Price, December 31, 2010$ 1.32
Granted, Shares77,451,000
Granted, Weighted Average Exercise Price$ 1.80
Exercised, Shares(9,965,000)
Exercised, Weighted Average Exercise Price$ 0.91
Forfeited, cancelled or expired, Shares(24,288,000)
Forfeited, cancelled or expired, Weighted Average Exercise Price$ 4.32
Outstanding Shares, Sep 30, 2011445,068,000
Outstanding, Weighted Average Exercise Price, Sep 30, 2011$ 1.25
Outstanding, Weighted Average Remaining Contractual Term, Sep 30, 20116.60
Outstanding, Aggregate Intrinsic Value, Sep 30, 2011$ 278,467
Exercisable, Sep 30, 2011145,867,000
Exercisable, Weighted Average Exercise Price$ 1.89
Exercisable, Weighted Average Remaining Contractual Term5.49
Exercisable, Aggregate Intrinsic Value$ 81,314