Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 1	$ 4,438,494
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 2	2.7
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 3	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	3,626,747
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 6	2.7
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 7	19
Stock-based Compensation Schedule Of Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 8	$ 0