Intangible assets (Tables)

12 Months Ended

Dec. 31, 2014

Intangible assets [Abstract]

Intangible assets

At December 31, 2014 and 2013, intangible assets and accumulated intangible assets were comprised of the following:

	2014			2013
Intangible assets	$	52,562,549		$	54,719,918
Accumulated amortization		(13,714,153	)		(8,511,833	)
Intangible assets, net	$	38,848,396		$	46,208,085

Intangible assets future amortization expense

Amortization of intangible assets for periods subsequent to December 31, 2014 is as follows:

Year Ended December 31,	Amortization Expense
2015	$	5,256,255
2016		5,256,255
2017		5,256,255
2018		5,256,255
2019		5,256,255
Thereafter		12,567,121
Total	$	38,848,396