Annual report pursuant to Section 13 and 15(d)

Intangible assets other than goodwill - Schedule of Estimated Future Amortization Expense (Details)

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Intangible assets other than goodwill - Schedule of Estimated Future Amortization Expense (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
2017 $ 167,316  
2018 161,118  
2019 142,725  
2020 131,367  
2021 119,987  
Thereafter 343,454  
Intangible assets, net $ 1,065,967 $ 1,044,611