Fair Value Measurement - Schedule of Unobservable Fair Value Inputs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2015			$ (22,161,822)
Change in fair value of contingent consideration	$ 7,276,000	$ 676,424	9,187,336	$ 989,657
Foreign exchange impact(2)			(1,359,634)
Balance as of June 30, 2016	(18,560,310)		(18,560,310)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2015			(22,161,822)
Contingent consideration payments paid in cash			4,143,790
Change in fair value of contingent consideration			8,124,091
Reclassification to Due to seller			350,000
Foreign exchange impact(2)			170,967
Balance as of June 30, 2016	$ (18,560,310)		$ (18,560,310)