Quarterly report pursuant to Section 13 or 15(d)

Other long-term assets (Details)

v2.4.1.9
Other long-term assets (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Other long-term assets [Abstract]      
Patents, trademarks and applications, net of accumulated amortization $ 1,327,483us-gaap_FiniteLivedIntangibleAssetsNet   $ 1,336,951us-gaap_FiniteLivedIntangibleAssetsNet
Goodwill 387,239us-gaap_Goodwill   387,239us-gaap_Goodwill
Total other long-term assets 1,714,722us-gaap_OtherAssetsNoncurrent   1,724,190us-gaap_OtherAssetsNoncurrent
Finite-lived assets, accumulated amortization 531,790us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization   507,644us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Future amortization      
2015 97,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
2016 97,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
2017 97,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
2018 97,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
2019 97,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Impairment charges