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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Schedule of Stockholders' Equity Note, Warrants or Rights | As of December 31, 2022 and 2021, we had the following outstanding January 2020 Warrants to purchase shares of common stock:
| As of December 31, 2022 |  | As of December 31, 2021 |  |  |  |
| Number of Underlying Shares |  | Exercise Price |  | Expiration
Investor Warrants | 187,734 |  | 187,734 |  | $3.3700 |  | January 13, 2025
Placement Agent Warrants | 41,680 |  | 41,680 |  | $4.9940 |  | January 13, 2025
| 229,414 |  | 229,414 |  |  |  |
Schedule of Impact of Results of Stock-Based Compensation | The following table summarizes stock-based compensation expense and the impact it had on operations for the periods presented (in thousands):
| For the year ended December 31,
| 2022 |  | 2021 |  |
Cost of sales | $ | 2 |  |  | $ | 9 |  |  |
Product development | 15 |  |  | 14 |  |  |
Selling, general, and administrative | 100 |  |  | 406 |  |  |
Total stock-based compensation | $ | 117 |  |  | $ | 429 |  |  |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions | Estimates utilized in the calculation include the expected life of the option, risk-free interest rate, and expected volatility, and are further comparatively detailed as follows:
| 2022 |  | 2021 |  |
Fair value of options issued | $ | 0.77 |  |  | $ | 3.92 |  |  |
Exercise price | $ | 0.95 |  |  | $ | 5.07 |  |  |
Expected life of option (in years) | 6.1 |  | 6.2 |  |
Risk-free interest rate | 3.0 | % |  | 0.9 | % |  |
Expected volatility | 104.0 | % |  | 96.3 | % |  |
Dividend yield | 0.00 | % |  | 0.00 | % |  |
Schedule of Option Activity | A summary of option activity under all plans was as follows:
| Number of Options |  | Weighted Average Exercise Price Per Share
Outstanding at December 31, 2020 | 221,450 |  |  | 3.45 |
Granted | 88,240 |  |  | 5.07 |
Cancelled | (36,706) |  |  | 5.35 |
Expired | (1,650) |  |  | 49.18 |
Exercised | (4,225) |  |  | 1.96 |
Outstanding at December 31, 2021 | 267,109 |  |  | $ | 3.46 |
Granted | 226,960 |  |  | 0.95
Cancelled | (160,778) |  |  | 2.99 |
Expired | (2,233) |  |  | 2.78 |
Exercised | (250) |  |  | 1.45 |
Outstanding at December 31, 2022 | 330,808 |  |  | $ | 1.97 |
Vested and expected to vest at December 31, 2022 | 276,267 |  |  | $ | 2.13 |
Exercisable at December 31, 2022 | 117,542 |  |  | $ | 3.13 |
Schedule of Options Outstanding | The options outstanding at December 31, 2022 have been segregated into ranges for additional disclosure as follows:
OPTIONS OUTSTANDING |  | OPTIONS EXERCISABLE
Range of Exercise Prices |  | Number of Shares Outstanding |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price |  | Number of Shares Exercisable |  | Weighted Average Remaining Contractual Life (in years) |  | Weighted Average Exercise Price
$0.42 | — | $0.74 |  | 2,640 |  |  | 9.6 |  | $ | 0.72 |  |  | — |  |  | — |  |  | $ | — |
$0.75 | — | $0.78 |  | 150,000 |  |  | 9.7 |  | 0.75 |  |  | — |  |  | — |  |  | — |
$0.79 | — | $1.80 |  | 69,284 |  |  | 7.0 |  | 1.46 |  |  | 32,204 |  |  | 4.8 |  | 1.49 |
$1.81 | — | $2.25 |  | 48,125 |  |  | 5.2 |  | 2.10 |  |  | 48,125 |  |  | 5.2 |  | 2.10 |
$2.26 | — | $27.35 |  | 60,759 |  |  | 6.9 |  | 5.53 |  |  | 37,213 |  |  | 6.1 |  | 5.88 |
|  |  |  | 330,808 |  |  | 8.0 |  | $ | 1.97 |  |  | 117,542 |  |  | 5.4 |  | $ | 3.13 |
Schedule of Restricted Stock Activity | The following table shows a summary of restricted stock unit activity:
|  |  | Restricted Stock Units Outstanding |  | Weighted Average Grant Date Fair Value
At December 31, 2020 |  |  | 4,480 |  |  | $ | 8.64 |
Granted |  |  | 50,000 |  |  | 5.26 |
Vested |  |  | (52,080) |  |  | 5.46 |
At December 31, 2021 |  |  | 2,400 |  |  | $ | 7.14 |
Granted |  |  | 50,000 |  |  | 1.26 |
Vested |  |  | (40,800) |  |  | 1.51 |
At December 31, 2022 |  |  | 11,600 |  |  | $ | 1.59 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + 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) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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