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Stockholders Equity and StockBased Compensation (Details 4) - Options Held [Member] - $ / shares | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Shares, non-vested, beginning | 49,726 | 84,873
Shares, Granted | 58,164 | 7,634
Shares, vested | 96,124 | 41,552
Shares, Forfeited | 0 | 1,229
Shares, non-vested, end of period | 11,766 | 49,726
Weighted average exercise price, Beginning | $ 9.71 | $ 10.73
Weighted average exercise price, granted | 6.72 | 4.45
Weighted average exercise price, vested | 8.40 | 10.80
Weighted average exercise price, forfeited | 0 | 10.80
Weighted average exercise price, end of period | 5.71 | 9.71
Weighted average fair value grant date, beginning | 7.44 | 5.15
Weighted average fair value grant date, granted | 2.58 | 3.28
Weighted average fair value grant date, vested | 4.89 | 8.29
Weighted average fair value grant date, forfeited | 0 | 8.33
Weighted average fair value grant date, end of period | $ 4.25 | $ 7.44

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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