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Schedule of Stock Options Roll Forward (Details) (Parenthetical) - $ / shares | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Stock Option Outstanding [Member] |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | $ 2.79 | $ 2.79
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | 7.50 | $ 7.05
Stock Option Exercisable [Member] |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | 2.79 |
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 7.29 |

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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