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Debt (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 09, 2024 | Sep. 21, 2023 | Mar. 13, 2023 | Sep. 08, 2022 | Apr. 04, 2022 | May 09, 2024 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Sep. 20, 2023 | Mar. 21, 2023 | Apr. 30, 2022 | Mar. 31, 2022
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 37,320 |  | $ 37,683 |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | 45,540 |  | 44,200 |  |  |  |
Cash |  |  |  |  |  |  | 25,500 |  |  |  |  |  |
Interest expense |  |  |  |  |  |  | 16 | $ 183 |  |  |  |  |
Debt extinguishment losses |  |  |  |  |  |  | 369 | 525 |  |  |  |  |
Cash [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes payable |  |  |  |  |  |  | 2,000 |  |  |  |  |  |
April 2022 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 27,500 |  | $ 17,602 |  | $ 17,602 |  |  |  |
Debt instrument stated percentage |  |  |  |  | 7.875% |  | 7.875% |  | 7.875% |  |  |  |
Conversion price |  |  |  |  | $ 75.00 |  | $ 75.00 |  | $ 75.00 |  |  |  |
Debt instrument maturity date |  |  |  |  | Apr. 04, 2024 |  | Apr. 04, 2025 |  | Apr. 04, 2025 |  |  |  |
Debt instrument maturity date, description |  |  |  |  | maturity date the investor agreed to extend by one year, to April 4, 2025 |  |  |  |  |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | $ 18,800 |  | $ 19,000 |  |  |  |
September 2022 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 11,250 |  |  | $ 8,782 |  | $ 9,062 |  |  |  |
Debt instrument stated percentage |  |  |  | 7.875% |  |  | 7.875% |  | 7.875% |  |  |  |
Conversion price |  |  |  | $ 75.00 |  |  | $ 75.00 |  | $ 75.00 |  |  |  |
Debt instrument maturity date |  |  |  | Sep. 06, 2024 |  |  | Sep. 08, 2025 |  | Sep. 06, 2025 |  |  |  |
Debt instrument maturity date, description |  |  |  | maturity date the investor agreed to extend by one year, to September 8, 2025. |  |  |  |  |  |  |  |  |
Debt instrument description |  |  |  | The Company is subject to financial covenants requiring: (i) a minimum of $8.0 million of available cash at all times; (ii) the ratio of (a) the outstanding principal amount of the total senior convertible notes outstanding, accrued and unpaid interest thereon and accrued and unpaid late charges to (b) the Company’s average market capitalization over the prior ten trading days, to not exceed 30% (the “Debt to Market Cap Ratio Test”); and (iii) the Company’s market capitalization to at no time be less than $75 million |  |  |  |  |  |  |  |  |
Repayment of convertible debt |  |  |  |  |  |  | $ 280 |  |  |  |  |  |
Interest expense |  |  |  |  |  |  | $ 24 |  |  |  |  |  |
Issuance of common stock share |  |  |  |  |  |  | 112,461 |  |  |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | $ 13,600 |  | $ 11,250 |  |  |  |
Cash |  |  |  |  |  |  | 198 |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 202 |  |  |  |  |  |
September 2022 Senior Convertible Note [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of convertible debt |  |  |  |  |  | $ 280 |  |  |  |  |  |  |
Interest expense |  |  |  |  |  | $ 24 |  |  |  |  |  |  |
Issuance of common stock share | 112,597 |  |  |  |  | 112,597 |  |  |  |  |  |  |
Cash | $ 199 |  |  |  |  | $ 199 |  |  |  |  |  |  |
September 2022 Senior Convertible Note [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price |  |  |  |  |  |  | $ 2.70 |  |  |  |  |  |
April And September2024 Senior Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument stated percentage |  |  |  | 82.50% |  |  |  |  |  |  |  |  |
Senior convertible note |  |  |  | $ 2,000 |  |  |  |  |  |  |  |  |
April And September2024 Senior Convertible Notes [Member] | April 23 2024 Through May 7 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |
April 2022 Senior Convertible Note and September 2022 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument stated percentage |  |  |  |  |  |  |  |  |  |  |  | 82.50% |
Conversion price |  |  |  |  |  |  |  |  |  |  |  | $ 2.70 |
Lucid March 2023 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 11,100 |  |  |  | $ 10,936 |  | $ 11,019 | $ 11,100 | $ 11,100 |  |
Debt instrument stated percentage |  |  | 7.875% |  |  |  | 7.875% |  | 7.875% | 7.875% |  |  |
Conversion price |  |  | $ 5.00 |  |  |  | $ 5.00 |  | $ 5.00 |  |  |  |
Debt instrument maturity date |  | Mar. 21, 2025 | Mar. 21, 2025 |  |  |  | Mar. 21, 2025 |  | Mar. 21, 2025 |  |  |  |
Debt instrument description |  |  |  |  |  |  | (i) a minimum of $5.0 million of available cash at all times; (ii) the ratio of (a) the outstanding principal amount of the total senior convertible notes outstanding, accrued and unpaid interest thereon and accrued and unpaid late charges to (b) Lucid’s average market capitalization over the prior ten trading days, as of the last day of any fiscal quarter commencing with September 30, 2023, to not exceed 30%; and (iii) Lucid’s market capitalization to at no time be less than $30 million. |  |  |  |  |  |
Repayment of convertible debt |  |  |  |  |  |  | $ 83 |  |  |  |  |  |
Interest expense |  |  |  |  |  |  | $ 436 |  |  |  |  |  |
Issuance of common stock share |  |  |  |  |  |  | 543,298 |  |  |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | $ 13,140 |  | $ 13,950 |  |  |  |
Proceeds from convertible debt |  |  | $ 9,925 |  |  |  |  |  |  |  |  |  |
Debt instrument fee amount |  |  | $ 1,186 |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | $ 24 |  |  |  |  |
Principal repayment |  | $ 292 |  |  |  |  |  |  |  |  |  |  |
Conversion price, percentage |  |  |  |  |  |  | 82.50% |  |  |  |  |  |
Conversion price per share |  |  |  |  |  |  | $ 0.30 |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 167 |  |  |  |  |  |
Lucid March 2023 Senior Convertible Note [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense | $ 110 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock share | 1,139,851 |  |  |  |  | 1,139,851 |  |  |  |  |  |  |
Debt instrument fair value | $ 1,037 |  |  |  |  | $ 1,037 |  |  |  |  |  |  |
Loss on extinguishment of debt | 612 |  |  |  |  |  |  |  |  |  |  |  |
Investor [Member] | September 2022 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | 307 |  |  |  |  |  |
Investor [Member] | September 2022 Senior Convertible Note [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument fair value | $ 260 |  |  |  |  | $ 260 |  |  |  |  |  |  |
Investor [Member] | Lucid March 2023 Senior Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument fair value |  |  |  |  |  |  | $ 686 |  |  |  |  |  |
Securities Purchase Agreement [Member] | Accredited Institutional Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000
Securities Purchase Agreement [Member] | Accredited Institutional Investor [Member] | Initial Issuance [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | 27,500
Securities Purchase Agreement [Member] | Accredited Institutional Investor [Member] | Additional Issuance [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 22,500

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