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Intangible Assets and Goodwill
3 Months Ended
Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill

7. Intangible Assets and Goodwill

 

Intangible assets and goodwill at March 31, 2018 and December 31, 2017 consists of the following:

 

    March 31, 2018     December 31, 2017  
Permits and licenses   $ 25,000     $ 25,000  
Customer lists     323,249       351,432  
Goodwill     28,182       28,182  
Total intangible assets and goodwill     376,431       404,614  
Less accumulated amortization     (53,133 )     (50,764 )
Intangible assets and goodwill - net   $ 323,298       353,850  

 

Amortization expense totaled $2,370 and $2,929 for the three months ended March 31, 2018 and March 31, 2017, respectively.