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Stockholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2022
Stockholders' Equity [Abstract] |
Restricted Stock Activity |
| Shares |  | Weighted ‎average grant ‎date fair value
Unvested at December 31, 2021 | 65,100 |  | $ | 4.10
Granted | 240,777 |  |  | 1.52
Vested | (121,232) |  |  | 2.14
Forfeited | — |  |  | —
Unvested at March 31, 2022 | 184,645 |  | $ | 2.03
Stock Option Activity |
| Number of ‎options |  | Weighted ‎average ‎exercise price
Outstanding at December 31, 2021 | 663,425 |  | $ | 4.31
Issued | 209,755 |  |  | 1.55
Exercised | — |  |  | —
Forfeited | — |  |  | —
Expired | — |  |  | —
Outstanding at March 31, 2022 | 873,180 |  | $ | 3.65
Exercisable at March 31, 2022 | 624,075 |  | $ | 4.31
Stock Option Grants Weighted Average Assumptions |
|  | 2022
Expected volatility |  | 103%
Risk free interest rate |  | 2.10%
Expected dividend yield |  | 0%
Expected life (in years) |  | 5
Information About Options Outstanding and Exercisable |
Weighted ‎average exercise ‎price of outstanding ‎options |  | Number of ‎options ‎outstanding |  | Weighted ‎average remaining ‎estimated life ‎(in years) |  | Number of ‎options ‎exercisable |
$1.52 - $2.50 |  | 732,288 |  | 7.9 |  | 503,779 |
$5.44 - $6.72 |  | 55,402 |  | 8.2 |  | 34,789 |
$7.50 - $10.80 |  | 16,403 |  | 2.1 |  | 16,403 |
$14.20 - $23.40 |  | 69,087 |  | 4.0 |  | 69,087 |
|  | 873,180 |  |  |  | 624,058 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + 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) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -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 (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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