Employee Share-Based Compensation (Details 1) (Service Period Based Stock Options [Member], USD $)	6 Months Ended
	Jun. 30, 2012
Service Period Based Stock Options [Member]
Number of Shares
Outstanding at December 31, 2011	13,895,872
Options Granted	3,540,000
Options Exercised
Options Forfeited	(4,573,384)
Outstanding at june 30, 2012	12,862,488
Exercisable at June 30, 2012	9,854,670
Weighted Average Exercise Price
Outstanding at December 31, 2011	$ 1.53
Options Granted	$ 0.84
Options Exercised
Options Forfeited	$ 1.03
Outstanding at June 30, 2012	$ 1.52
Exercisable at June 30, 2012	$ 1.51
Weighted Average Remaining Contractual Term
Outstanding at june 30, 2012	6 years 1 month 10 days
Exercisable at June 30, 2012	6 years 18 days
Aggregate Intrinsic Value
Outstanding at june 30, 2012	$ 98,744
Exercisable at June 30, 2012	$ 79,276