Annual report pursuant to Section 13 and 15(d)

Other long-term assets (Narrative) (Details)

v3.7.0.1
Other long-term assets (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Future amortization    
2017 $ 68,000  
2018 68,000  
2019 68,000  
2020 68,000  
2021 68,000  
Patent impairment charges 535,256 $ 188,141
Patents [Member]    
Future amortization    
Amortization expense of intangible assets $ 76,422 $ 104,433