Intangible Assets (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Intangible Assets [Abstract]
Intangible assets	$ 25,586,024		$ 21,429,488
Accumulated amortization	(3,933,403)		(2,809,972)
Intangible assets, net	21,652,621		18,619,516
Intangible assets, useful life	10 years
Amortization of intangible assets	$ 1,123,431	$ 1,041,520