| December 31, 2013 | December 31, 2012 | ||||||||||||
| Weighted | Weighted | ||||||||||||
| Average | Average | ||||||||||||
| Number | Exercise | Number | Exercise | ||||||||||
| of Warrants | Price | of Warrants | Price | ||||||||||
| Outstanding - beginning of year | 4,716,862 | $ | 1.01 | 4,041,383 $ | 1.07 | ||||||||
| Correction to opening balance | - | - | (55 | ) | 1.07 | ||||||||
| Issued | 8,081,723 | 0.51 | 910,534 | 1.70 | |||||||||
| Exercised | - | - | (235,000 | ) | 0.50 | ||||||||
| Expired | (36,000 | ) | (1.18 | ) | - | - | |||||||
| Outstanding - end of year | 12,762,585 | $ | 0.69 | 4,716,862 $ | 1.22 | ||||||||