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Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The fair value of each stock option granted was estimated using the following assumptions:
| June 28, 2021
Risk free interest rate | 0.47%
Expected option lives | 3 years
Expected volatility | 1.36
Estimated forfeiture rate | —
Expected dividend yields | —
Weighted average grant date fair value of options | $37.20
Summary of Options Granted, Exercised, Expired and Forfeited | A summary of stock options expired and forfeited under our plans and options outstanding as of, and changes made during, the years ended December 31, 2022 and 2021 is presented below:
| Outstanding |  | Exercisable
| Number of Options |  | Weighted Average Exercise Price |  | Number of Options |  | Weighted Average Exercise Price
Options outstanding and exercisable, December 31, 2020 | 7,169 |  |  | $ | 294.63 |  |  | 7,169 |  |  | $ | 294.63 |
Granted | 20,000 |  |  | 48.75 |  |  |  |  |
Options outstanding and exercisable, December 31, 2021 | 27,169 |  |  | 113.63 |  |  | 7,169 |  |  | 294.63 |
Vested | — |  |  | — |  |  | 3,332 |  |  | 48.75 |
Expired | (501) |  |  | 410.18 |  |  | (501) |  |  | 410.18 |
Forfeited | (10,000) |  |  | 48.75 |  |  | — |  |  | — |
Options outstanding and exercisable, December 31, 2022 | 16,668 |  |  | $ | 143.63 |  |  | 10,000 |  |  | $ | 206.85 |
Shares Outstanding and Exercisable, By Exercise Price Range | Additional information as of December 31, 2022 is as follows:
|  | Outstanding Exercisable |  | Exercisable
Range of price |  | Number of Options |  | Weighted Average Remaining Contractual Life (In Years) |  | Weighted Average Exercise Price |  | Number of Options |  | Weighted Average Exercise Price
$0.00 – $100.00 |  | 10,000 |  |  | 8.50 |  | $ | 48.75 |  |  | 3,332 |  |  | $ | 48.75 |
$100.01 – $200.00 |  | 167 |  |  | 0.50 |  | 135.00 |  |  | 167 |  |  | 135.00 |
$201.01 – $300.00 |  | 6,501 |  |  | 0.17 |  | 289.77 |  |  | 6,501 |  |  | 289.77 |
|  | 16,668 |  |  | 3.06 |  | $ | 143.63 |  |  | 10,000 |  |  | $ | 206.85 |
Schedule of Compensation Expense | Stock-based compensation expense relating to Restricted Series D Preferred Stock is allocated as follows (in thousands):
| Year Ended December 31,
| 2022 |  | 2021
Research and development | $ | — |  |  | $ | 17 |
Sales, general and administrative | — |  |  | 16 |
| $ | — |  |  | $ | 33 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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 (e) -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 (c)(2) -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 (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -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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