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Goodwill
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
6.
Goodwill
 
The following is a summary of goodwill activity for the years ended December 31, 2017 and 2016:
 
Balance at January 1, 2016
 
$
100,851,144
 
 
 
 
 
 
Acquisitions
 
 
2,872,817
 
Impairments
 
 
(316,610)
 
 
 
 
 
 
Balance at December 31, 2016
 
$
103,407,351
 
 
 
 
 
 
Acquisitions (Note 3)
 
 
86,439,851
 
 
 
 
 
 
Balance at December 31, 2017
 
$
189,847,202