Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets-Net - Schedule of Finite-Lived Intangible Assets (Details)

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Goodwill and Intangible Assets-Net - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross $ 19,237,573 $ 19,226,094
Less: Accumulated amortization (17,145,695) (16,716,550)
Intangible assets - net 2,091,878 2,509,544
Customer Relationships Acquired [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross 16,491,300 16,491,300
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross 1,236,377 1,236,377
Other Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross $ 1,509,896 $ 1,498,417