Warrants | Weighted Average Exercise Price | Weighted Average Remaining Life (Years) | ||||||||||
Warrants outstanding, December 31, 2011 | 871 | $ | 12.23 | |||||||||
Granted | 1,731 | $ | 1.28 | |||||||||
Warrants outstanding, December 31, 2012 | 2,602 | $ | 4.95 | 6.34 | ||||||||
Warrants outstanding, December 31, 2013 | 2,602 | $ | 4.95 | 5.34 |