Business Segments - Schedule of Business Segment Financial Information (Details)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2016 USD ($) segment	Sep. 30, 2015 USD ($)	Dec. 31, 2015 segment
Segment Reporting Information [Line Items]
Fair value of contingent consideration adjustment expense (income)	$ 788,000	$ 701,000		$ 9,975,423	$ 1,690,743
Number of Operating Segments | segment				2		3
Revenue from third parties	279,993,378	264,720,000		$ 820,286,000	759,043,000
Revenue from other segments	0			925	0
Total revenue	279,993,000			820,286,000
Adjusted EBITDA	16,919,831	16,051,346		43,407,523	37,674,000
North America [Member]
Segment Reporting Information [Line Items]
Revenue from third parties	185,199,338		$ 179,990,000	550,561,300	519,727,000
Revenue from other segments	3,400,701	0		5,048,199	0
Total revenue	188,600,039	179,990,000		555,609,499	519,727,000
Adjusted EBITDA	16,411,000	17,050,000		48,209,000	46,746,000
Latin America [Member]
Segment Reporting Information [Line Items]
Revenue from third parties	94,794,039	84,730,000		269,724,543	239,316,000
Revenue from other segments	9,064,927	2,874,000		16,573,726	8,328,000
Total revenue	103,858,966	87,604,000		286,298,269	247,644,000
Adjusted EBITDA	7,444,444	5,710,000		17,482,000	11,661,000
Other [Member]
Segment Reporting Information [Line Items]
Revenue from third parties	0			0
Revenue from other segments	(12,465,628)	(2,874,000)		(21,621,924)	(8,328,000)
Total revenue	(12,465,628)	(2,874,000)		(21,621,000)	(8,328,000)
Adjusted EBITDA	$ (6,934,000)	$ (6,709,000)		$ (22,284,000)	$ (20,734,000)