Share-Based Compensation (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Stock option activity
Outstanding, Beginning of Period, Number of Shares	8,826,500
Granted, number of shares	2,025,750
Granted, Weighted average Exercise Price	$ 1.65
Granted, Aggregate Intrinsic Value	$ 790
Exercised, Number of Shares
Exercised, Weighted average Exercise Price
Exercised, aggregate intrinsic value
Cancelled, Number of Shares
Cancelled, Weighted average Exercise Price
Cancelled, Aggregate Intrinsic Value
Outstanding, End of Period, Number of Shares	10,852,250
Weighted average Exercise Price, Beginning balance	$ 5.41	$ 4.71
Outstanding, End of Period, Aggregate Intrinsic Value	3,491
Exercisable, End of Period, Number of Shares	6,068,162
Exercisable, End of Period, Weighted average Exercise Price	$ 7.35
Exercisable, End of Period, Aggregate Intrinsic Value	$ 226