Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Definite Lived Intangible Assets (Details)

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Goodwill and Intangible Assets - Definite Lived Intangible Assets (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, net $ 21,566,829 $ 30,637,829 $ 39,995,871
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 33,605,000 33,605,000  
Less: accumulated amortization 17,655,228 9,295,228  
Intangible assets, net 15,949,772 24,309,772  
Trade names      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 7,110,000 7,110,000  
Less: accumulated amortization $ 1,492,943 $ 781,943