| Weighted | |||||||
| Average | |||||||
| Number of Options | Exercise Price | ||||||
| Outstanding, January 1, 2017 | 1,417,000 | $ | 2.89 | ||||
| Granted | 75,000 | 1.64 | |||||
| Expired | (77,000 | ) | 0.65 | ||||
| Cancelled | (15,000 | ) | 0.99 | ||||
| Outstanding, December 31 2017 | 1,400,000 | $ | 2.04 | ||||
| Exercisable, December 31, 2017 | 1,400,000 | $ | 2.04 | ||||
| Outstanding, January 1, 2016 | 484,000 | $ | 7.10 | ||||
| Granted | 1,025,000 | 0.60 | |||||
| Cancelled | (92,000 | ) | 5.51 | ||||
| Outstanding, December 31, 2016 | 1,417,000 | $ | 2.89 | ||||
| Exercisable, December 31, 2016 | 1,412,000 | $ | 1.43 | ||||
| Outstanding, January 1, 2015 | 489,000 | $ | 6.70 | ||||
| Granted | 15,000 | $ | 3.60 | ||||
| Cancelled | (20,000 | ) | $ | 9.70 | |||
| Outstanding, December 31, 2015 | 484,000 | $ | 7.10 | ||||
| Exercisable, December 31, 2015 | 455,500 | $ | 7.10 |