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v3.25.1

Stock-Based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 20, 2025 | Feb. 22, 2024 | Jan. 31, 2025 | May 31, 2024 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock option grants | [1] |  |  |  |  |  |  |  |  | 3,733,000 | 3,618,000
Aggregate fair value of RSA granted |  |  |  |  |  |  |  |  |  |  |
Proceeds for issuance |  |  |  |  |  |  |  |  |  | $ 447 | $ 551
Subsequent Event [Member] | Employees [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock options granted |  | 1,306,000 |  |  |  |  |  |  |  |  |
Weighted average exercise price |  | $ 1.49 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted stock awards granted |  |  |  |  |  |  |  |  |  | 1,600,000 | 550,000
2018 Long-Term Incentive Equity Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares reserved for issuance |  |  |  |  |  |  |  |  |  | 14,324,038 |
Shares available for issue |  |  |  |  |  |  |  |  |  | 866,463 |
2018 Long-Term Incentive Equity Plan [Member] | Employees and Directors [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock options granted |  |  | 2,895,000 |  |  |  |  |  |  |  |
Weighted average exercise price |  |  | $ 1.25 |  |  |  |  |  |  |  |
2018 Long-Term Incentive Equity Plan [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares available for issue |  |  |  | 4,018,163 |  |  |  |  |  |  |
2018 Long-Term Incentive Equity Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted average estimated fair value |  |  |  |  |  |  |  |  |  | $ 0.79 | $ 0.88
2018 Long-Term Incentive Equity Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted stock awards granted |  |  |  |  | 1,600,000 |  |  |  |  |  |
Aggregate fair value of RSA granted |  |  |  |  | $ 1,500 |  |  |  |  |  |
2018 Long-Term Incentive Equity Plan [Member] | Restricted Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted stock awards granted |  | 2,686,800 |  |  |  |  |  |  |  |  |
Aggregate fair value of RSA granted |  | $ 4,000 |  |  |  |  |  |  |  |  |
Outside of 2018 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock option grants |  |  |  |  |  |  |  |  |  | 523,300 | 523,300
Outside of 2018 Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock option grants |  |  |  |  |  |  |  |  |  | 523,300 |
Outside of 2018 Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted stock awards granted |  |  |  |  |  |  |  |  |  | 50,000 |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares reserved for issuance |  |  |  |  |  |  |  |  |  | 1,500,000 |
Shares available for issue |  |  |  |  |  |  |  |  |  | 259,830 |
Number of common stock purchased |  |  |  |  |  | 136,056 | 511,884 | 276,213 | 231,987 |  |
Proceeds for issuance |  |  |  |  |  | $ 94 | $ 353 | $ 275 | $ 276 |  |
Employee Stock Purchase Plan [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Increase in number of shares available for issue |  |  |  | 1,000,000 |  |  |  |  |  |  |
[1] | Stock options granted under the Lucid Diagnostics 2018 Equity Plan and those granted outside such plan generally vest one-third in one year then ratably over the next eight quarters, and have a ten-year contractual term from date-of-grant.

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