Quarterly report pursuant to Section 13 or 15(d)

Warrants (Narrative) (Details)

v2.4.0.8
Warrants (Narrative) (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Number of warrants, Outstanding 18,921,902 21,656,142 24,968,868 21,656,142
Exercise price $ 1.16 $ 0.89 $ 0.86 $ 0.89
Warrant expiration date, start May 19, 2014      
Warrant expiration date, end Jan. 21, 2019      
Average remaining contractual life of warrants outstanding 3 years 1 month 6 days   3 years 2 months 12 days  
Probability of entering into a fundamental transaction 5.00%      
Maximum [Member]
        
Exercise price $ 1.90      
Minimum [Member]
        
Exercise price $ 0.41