Quarterly report pursuant to Section 13 or 15(d)

Other long-term assets (Narrative) (Details)

v3.7.0.1
Other long-term assets (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Future amortization    
2018 $ 71,000  
2019 71,000  
2020 71,000  
2021 71,000  
2022 71,000  
Patent impairment charges $ 134,000