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v3.23.1

Stock Awards and Stock-Based Compensation (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 13, 2020 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Options Outstanding |  |  |  |  |  |
Beginning balance |  | 387,109 | 395,002 | 395,002 | 346,806 |
Options granted | 281,648 | 2,647 |  | 7,443 | 52,347 |
Options exercised |  | (1,230) |  | (15,121) |  |
Options canceled and forfeited |  | (756) |  | (215) | (4,151) |
Ending balance |  | 387,770 |  | 387,109 | 395,002 | 346,806
Options vested and exercisable |  | 387,770 |  | 387,109 |  |
Weighted Average Exercise Price |  |  |  |  |  |
Beginning balance |  | $ 6.40 | $ 6.40 | $ 6.40 | $ 6.30 |
Options granted |  | 3.01 |  | 3.20 | 7.55 |
Options exercised |  | 3.25 |  | 6.30 |  |
Options canceled and forfeited |  | 7.94 |  | 4.40 | 3.85 |
Ending balance |  | 6.37 |  | 6.40 | $ 6.40 | $ 6.30
Options vested and exercisable |  | $ 6.37 |  | $ 6.40 |  |
Weighted Average Remaining Contractual Life (in years) |  |  |  |  |  |
Outstanding |  | 1 year 2 months 15 days |  | 1 year 5 months 12 days | 2 years 5 months 1 day | 3 years 2 months 15 days
Options vested and exercisable |  | 1 year 2 months 15 days |  | 1 year 5 months 12 days |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Outstanding |  | $ 0 |  | $ 0 | $ 5,365,737 |
Options vested and exercisable |  | 0 |  | 0 |  |
Aggregate intrinsic value of options exercised |  | $ 0 | $ 37,000 | $ 0 | $ 0 | $ 527,450
Weighted average grant-date fair value of options granted per share |  | $ 2.00 | $ 16.72 | $ 7.65 | $ 9.55 |
Weighted average grant-date fair value of options granted amount |  | $ 4,000 | $ 29,000 | $ 57,000 | $ 500,000 |
Grants | Board members |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | 0 | 3,000 | 49,000 | 141,000 |
Grants | Various employees |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | $ 26,000 | 149,000 | $ 307,000 | 369,000 |
Options |  |  |  |  |  |
Options Outstanding |  |  |  |  |  |
Beginning balance |  | 387,109 |  |  |  |
Ending balance |  | 387,770 |  | 387,109 |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Restricted stock units outstanding |  | 70,641 |  | 64,699 |  |
Stock not yet issued |  | 62,965 |  | 57,197 |  |
Stock granted not yet vested |  | 7,676 |  | 7,502 |  |
Unrecognized stock-based compensation related to common stock grants |  | $ 15,000 |  | $ 23,000 |  |
Options | Board members |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | 0 |  | 0 | 114,000 |
Options | Various employees |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | $ 4,000 | 29,000 | $ 57,000 | 500,000 |
RSU |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Restricted stock units outstanding |  | 276,590 |  | 292,565 |  |
Stock not yet issued |  | 241,945 |  | 44,234 |  |
Restricted stock units ("RSUs") granted but not yet vested |  | 34,645 |  | 248,331 |  |
Unrecognized stock compensation related to the RSUs |  | $ 22,000 |  | $ 176,000 |  |
RSU | Board members |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | 3,000 | 17,000 | 190,000 | 297,000 |
RSU | Various employees |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |
Stock based awards granted |  | $ 29,000 | $ 89,000 | $ 1,800,000 | $ 1,470,000 |

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