Employee Stock Options (Details 1) - USD ($) |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Number of Options | |||||
| Outstanding - Beginning Balance | 2,280,000 | 2,232,500 | 2,232,500 | ||
| Exercisable - Beginning Balance | 2,280,000 | 2,232,500 | 2,232,500 | ||
| Granted | 50,000 | 0 | |||
| Cancelled or Expired | 0 | 0 | |||
| Outstanding - Ending Balance | 2,330,000 | 2,232,500 | 2,280,000 | 2,232,500 | |
| Exercisable - Ending Balance | 2,280,000 | 2,232,500 | 2,280,000 | 2,232,500 | |
| Weighted Average Exercise Price per Share | |||||
| Outstanding - Beginning Balance | $ 0.72 | $ 1.36 | $ 1.36 | ||
| Exercisable - Beginning Balance | 0.72 | 1.36 | 1.36 | ||
| Granted | 1.06 | 0 | |||
| Cancelled or Expired | 0 | 0 | |||
| Outstanding - Ending Balance | 0.73 | 1.36 | 0.72 | $ 1.36 | |
| Exercisable - Ending Balance | $ 0.72 | $ 1.36 | $ 0.72 | $ 1.36 | |
| Weighted Average Contractual Life in Years | |||||
| Outstanding | 3 years 2 months 16 days | 4 years 1 month 2 days | |||
| Exercisable | 3 years 2 months 8 days | 4 years 1 month 2 days | |||
| Aggregate Intrinsic Value | |||||
| Exercisable - Beginning Balance | $ 0 | ||||
| Exercisable - Ending Balance | $ 1,132,500 | ||||
| Stock option [Member] | |||||
| Number of Options | |||||
| Outstanding - Beginning Balance | 13,990,000 | 7,945,000 | 7,945,000 | 442,500 | |
| Exercisable - Beginning Balance | 13,610,000 | 7,627,500 | 7,627,500 | 407,500 | |
| Granted | 130,000 | 100,000 | 11,560,000 | 7,510,000 | |
| Cancelled or Expired | (50,000) | (5,515,000) | (7,500) | ||
| Outstanding - Ending Balance | 14,070,000 | 8,045,000 | 13,990,000 | 7,945,000 | 442,500 |
| Exercisable - Ending Balance | 13,700,000 | 7,677,500 | 13,610,000 | 7,627,500 | 407,500 |
| Weighted Average Exercise Price per Share | |||||
| Outstanding - Beginning Balance | $ 0.61 | $ 1.38 | $ 1.38 | $ 5.81 | |
| Exercisable - Beginning Balance | 0.59 | 1.35 | 1.35 | 5.57 | |
| Granted | 1.06 | 1.00 | 0.82 | 1.12 | |
| Cancelled or Expired | 0.90 | 0 | 1.37 | 4.18 | |
| Outstanding - Ending Balance | 0.61 | 1.37 | 0.61 | 1.38 | $ 5.81 |
| Exercisable - Ending Balance | $ 0.60 | $ 1.36 | $ 0.59 | $ 1.35 | $ 5.57 |
| Weighted Average Contractual Life in Years | |||||
| Outstanding | 2 years 11 months 1 day | 3 years 3 months 8 days | 3 years 1 month 24 days | 3 years 6 months | 1 year 8 months 19 days |
| Exercisable | 2 years 10 months 28 days | 3 years 2 months 30 days | 3 years 1 month 27 days | 3 years 6 months | 1 year 7 months 24 days |
| Aggregate Intrinsic Value | |||||
| Exercisable - Beginning Balance | $ 0 | $ 0 | $ 0 | $ 0 | |
| Exercisable - Ending Balance | $ 6,340,000 | $ 0 | |||