Fair Value Measurement - Schedule of Fair Value Measurement (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Assets:
Money market funds(1)	$ 667,356	$ 667,211
Liabilities:
Contingent consideration	(20,318,413)	(22,161,822)
Fair Value, Inputs, Level 1 [Member]
Assets:
Money market funds(1)	667,356	667,211
Liabilities:
Contingent consideration	0	0
Fair Value, Inputs, Level 2 [Member]
Assets:
Money market funds(1)	0	0
Liabilities:
Contingent consideration	0	0
Fair Value, Inputs, Level 3 [Member]
Assets:
Money market funds(1)	0	0
Liabilities:
Contingent consideration	$ (20,318,413)	$ (22,161,822)