| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
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Three Months Ended |
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|
Three Months Ended |
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Six Months Ended |
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Six Months Ended |
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June 30, 2021 |
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June 30, 2020 |
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June 30, 2021 |
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June 30, 2020 |
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| Risk-free interest rate |
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0.77% |
- |
0.87% |
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0.33% |
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|
|
0.46% |
- |
0.92% |
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|
0.33% |
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| Dividend yield |
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0% |
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0% |
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0% |
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0% |
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| Expected term (in years) |
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5 |
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|
5 |
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|
5 |
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|
5 |
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| Expected volatility |
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47.1% |
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47.7% |
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65.8% |
- |
66.0% |
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|
47.1% |
- |
92.6% |
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|
65.8% |
- |
66.0% |
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| Share-based Payment Arrangement, Option, Activity [Table Text Block] |
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Options outstanding |
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Weighted average |
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Weighted average |
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Aggregate |
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exercise price |
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remaining |
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intrinsic |
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| Incentive Options |
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Shares |
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per share |
|
contractual term |
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value |
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| Outstanding at December 31, 2020 |
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1,395,000 |
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$ |
0.31 |
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| Options granted |
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|
145,000 |
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2.62 |
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| Options exercised |
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(25,000 |
) |
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|
0.14 |
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| Outstanding at March 31, 2021 |
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1,515,000 |
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$ |
0.53 |
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| Options granted |
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127,500 |
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2.85 |
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| Options exercised |
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(360,000 |
) |
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|
0.22 |
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| Options expired |
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(20,000 |
) |
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|
0.17 |
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| Outstanding at June 30, 2021 |
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1,262,500 |
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$ |
0.86 |
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6 years |
|
$ |
2,876,868 |
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| Exercisable at June 30, 2021 |
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|
780,000 |
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$ |
0.33 |
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3 years, 2 months |
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$ |
2,194,843 |
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| Outstanding at December 31, 2019 |
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1,349,000 |
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$ |
0.23 |
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| Options expired |
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(129,000 |
) |
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|
0.17 |
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| Outstanding at March 31, 2020 |
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1,220,000 |
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|
0.24 |
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| Options granted |
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10,000 |
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|
0.15 |
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| Options expired |
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(10,000 |
) |
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|
0.19 |
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| Outstanding at June 30, 2020 |
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1,220,000 |
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$ |
0.24 |
|
3 years, 9 months |
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$ |
37,353 |
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| Exercisable at June 30, 2020 |
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|
1,207,000 |
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|
$ |
0.24 |
|
3 years, 8 months |
|
$ |
36,703 |
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| Schedule of Nonvested Share Activity [Table Text Block] |
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Nonvested |
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Weighted average |
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grant date |
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Shares |
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fair value |
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| Nonvested at December 31, 2020 |
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235,000 |
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$ |
0.36 |
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| Granted |
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145,000 |
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1.22 |
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| Vested |
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- |
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- |
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| Forfeited |
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- |
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- |
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| Nonvested at March 31, 2021 |
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380,000 |
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$ |
0.94 |
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| Granted |
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127,500 |
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1.19 |
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| Vested |
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(25,000 |
) |
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|
1.01 |
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| Forfeited |
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|
- |
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- |
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| Nonvested at June 30, 2021 |
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|
482,500 |
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$ |
0.94 |
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|
|
|
|
|
|
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|
|
|
|
|
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| Nonvested at December 31, 2019 |
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|
23,500 |
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$ |
0.17 |
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| Granted |
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|
- |
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|
- |
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| Vested |
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(5,000 |
) |
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|
0.21 |
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| Forfeited |
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|
- |
|
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|
- |
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| Nonvested at March 31, 2020 |
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18,500 |
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$ |
0.15 |
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| Granted |
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|
10,000 |
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|
0.08 |
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| Vested |
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(15,500 |
) |
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|
0.16 |
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| Forfeited |
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- |
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- |
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| Nonvested at June 30, 2020 |
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13,000 |
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$ |
0.09 |
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