Intangibles and Goodwill - Intangible Assets (Details) - USD ($)
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Summary of amortizable intangible assets:      
Finite-lived intangible assets, gross $ 174,317,979   $ 174,317,979
Less accumulated amortization (38,680,343)   (26,785,810)
Intangible assets, net $ 135,637,636   147,532,169
Weighted-Average Life (in years) 14 years 4 months 24 days    
Amortization of expense $ 11,894,533 $ 7,534,302  
Estimated amortization expense for the next five years and thereafter:      
Remainder of 2016 3,909,896    
2017 14,243,799    
2018 12,861,305    
2019 11,470,909    
2020 10,638,587    
Thereafter 82,513,140    
Intangible assets, net 135,637,636   147,532,169
Customer relationships      
Summary of amortizable intangible assets:      
Finite-lived intangible assets, gross $ 145,138,979   145,138,979
Weighted-Average Life (in years) 14 years 9 months 18 days    
Carrier relationships      
Summary of amortizable intangible assets:      
Finite-lived intangible assets, gross $ 18,300,000   18,300,000
Weighted-Average Life (in years) 17 years    
Noncompete agreements      
Summary of amortizable intangible assets:      
Finite-lived intangible assets, gross $ 5,239,000   5,239,000
Weighted-Average Life (in years) 6 years 8 months 12 days    
Trade names      
Summary of amortizable intangible assets:      
Finite-lived intangible assets, gross $ 5,640,000   $ 5,640,000
Weighted-Average Life (in years) 4 years