Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 1	$ 4,431,744
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 2	2.5
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 3	0.18
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	3,619,997
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 6	2.4
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 7	0.19
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 8	$ 0