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v3.21.1

Stock Options and Warrants (Details 2) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Summary of information about stock options outstanding |  |  |
Number Outstanding | 1,859,000 | 1,369,649 | 838,149
Exercisable | 1,488,997 | 1,269,649 |
Weighted Average Exercise Price | $ 1.56 | $ 2.01 | $ 3.08
Employee Stock Option [Member] | $0.00 - $5.00 [Member] |  |  |
Summary of information about stock options outstanding |  |  |
Range of Exercise Prices, Minimum | 0.00 |  |
Range of Exercise Prices, Maximum | $ 5.00 |  |
Number Outstanding | 1,784,000 |  |
Exercisable | 1,414,000 |  |
Weighted Average Life | 3 years 8 months 9 days |  |
Weighted Average Exercise Price | $ 1.25 |  |
Employee Stock Option [Member] | $5.01 - $15.00 [Member] |  |  |
Summary of information about stock options outstanding |  |  |
Range of Exercise Prices, Minimum | 5.01 |  |
Range of Exercise Prices, Maximum | $ 15.00 |  |
Number Outstanding | 75,000 |  |
Exercisable | 75,000 |  |
Weighted Average Life | 3 months 26 days |  |
Weighted Average Exercise Price | $ 8.85 |  |
Employee Stock Option [Member] | $0.00 - $15.00 [Member] |  |  |
Summary of information about stock options outstanding |  |  |
Range of Exercise Prices, Minimum | 0.00 |  |
Range of Exercise Prices, Maximum | $ 15.00 |  |
Number Outstanding | 1,859,000 |  |
Exercisable | 1,489,000 |  |
Weighted Average Life | 3 years 6 months 18 days |  |
Weighted Average Exercise Price | $ 1.56 |  |

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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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