Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 1	$ 5,662,160
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 2	3.1
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 3	0.34
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 4	0
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 5	4,843,663
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 6	3.06
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 7	0.38
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 8	$ 0