Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Narrative (Details)

v3.6.0.2
Goodwill and Intangible Assets - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Nov. 24, 2014
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangible assets $ 9,071,000 $ 9,101,375 $ 938,400  
Goodwill $ 86,043,148 $ 86,043,148 $ 86,131,395 $ 86,043,148
Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Acquired finite-lived intangible assets, weighted average useful life (in years) 3 years 4 months 6 days      
Trade names        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible asset, useful life (in years) 10 years      
Acquired finite-lived intangible assets, weighted average useful life (in years) 7 years 10 months 24 days      
Minimum | Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible asset, useful life (in years) 4 years      
Minimum | Trade names        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible asset, useful life (in years) 4 years      
Maximum | Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible asset, useful life (in years) 10 years      
Maximum | Trade names        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible asset, useful life (in years) 10 years