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Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |
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Feb. 16, 2024 | Feb. 15, 2024 | Jan. 12, 2024 | Jul. 31, 2023 | May 18, 2023 | Apr. 10, 2023 | Mar. 20, 2023 | Mar. 14, 2023 | Sep. 08, 2022 | Jul. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 13, 2024 | Feb. 22, 2024 | Dec. 31, 2023 | Sep. 14, 2023 | May 18, 2022
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  | 730,000,000 |  |  |  | 730,000,000 |  |
Common stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 |  |  |  | $ 0.0001 |  |
Common stock, shares issued |  |  |  |  |  |  |  |  |  |  |  | 21,984,614 |  |  |  | 19,378,192 |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  | 21,984,614 |  |  |  | 19,378,192 |  |
Common stock, voting Rights |  |  |  |  |  |  |  |  |  |  |  | common stock are entitled to one vote per share |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  | 10,000,000 |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  | 0 |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  | 0 |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 10,905,901 |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  |  | 892,856 |  |  |  |  |  | 892,856 |  |  |  |  |  |  |  |
Fair value of modified warrant, incremental expense |  |  |  |  |  |  |  |  |  |  | $ 402 |  | $ 402 |  |  |  |  |
Purchase price of per share |  |  |  | $ 3.5 |  | $ 6.5 | $ 8.34 |  |  | $ 3.5 |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 6,000 | 12,750 |  |  |  |  |
Exercise price |  |  |  | $ 3.5 |  | $ 7.5 |  |  |  | 3.5 |  |  |  | $ 8.1 |  |  |  |
Warrant term |  |  |  | 5 years |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Reduced exercise price |  |  |  |  |  |  |  |  |  | $ 3.5 |  |  |  |  |  |  |  |
Additional warrant liability |  |  |  |  |  | $ 1,389 |  |  |  |  |  |  |  |  |  |  |  |
Warrant liabilities |  |  |  | $ 511 |  |  |  |  |  | $ 511 |  | 4,403 |  |  |  | $ 4,359 |  |
Daily interest accruing rate |  |  | 18.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of the warrant liability |  |  |  | 2,645 |  | 4,280 |  |  |  | $ 2,645 |  | $ 4,259 |  |  |  | $ 3,784 |  |
Proceeds from the exercise of warrants |  |  |  | $ 3,000 |  | $ 6,000 |  |  |  |  |  |  |  |  |  |  |  |
2024 Warrant Repricing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  | $ 2.4898 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants repriced |  |  | 652,981 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of warrant modification for equity issuance cost |  |  | $ 524 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chief Administrative Officer | Amended Employment Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base salary | $ 425 | $ 500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
March 2023 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 208,485 |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  | $ 9,000 |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 30 |  |  |  |  |  |
Warrants and rights outstanding, expire date |  |  |  |  |  |  |  |  |  |  |  | Mar. 27, 2028 |  |  |  |  |  |
Term (years) |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Reduced exercise price |  |  |  |  |  |  |  | $ 10 |  |  |  |  |  |  |  |  |  |
Adjusted advance notice period |  |  |  |  |  |  | 61 days |  |  |  |  |  |  |  |  |  |  |
Premium paid for private placement purchase |  |  |  |  |  |  | $ 1,650 |  |  |  |  |  |  |  |  |  |  |
March 2023 PIPE Warrants | Private Placement | Chairman And Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |
January 2024 PIPE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from private placements |  |  | $ 909 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales agents commission rate |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |
Net proceeds from sale of common stock |  |  |  |  |  |  |  |  |  |  |  |  | 136 |  |  |  |  |
Gross proceeds from sale of common stock |  |  |  |  |  |  |  |  |  |  |  |  | $ 141 |  |  |  |  |
April 2023 Registered Direct Warrants (Modified) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 487,451 |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 3.5 |  |  |  |  |  |
Warrants and rights outstanding, expire date |  |  |  |  |  |  |  |  |  |  |  | Oct. 10, 2028 |  |  |  |  |  |
May 2022 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 405,405 |  |  |  |  |  |
Exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 3.5 |  |  |  |  |  |
Warrants and rights outstanding, expire date |  |  |  |  |  |  |  |  |  |  |  | Oct. 10, 2028 |  |  |  |  |  |
Reduced exercise price |  |  |  |  |  | $ 7.5 |  |  |  |  |  |  |  |  |  |  |  |
Amended termination date description |  |  |  |  |  | date to five and one-half years following the closing of the offering |  |  |  |  |  |  |  |  |  |  |  |
May 2023 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 581,394 |  |  |  |  |  |
Aggregate purchase price |  |  |  |  | $ 3,750 |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  |  | $ 10 |  |  |  |  |  |  | $ 10 |  |  |  |  |  |
Warrants and rights outstanding, expire date |  |  |  |  | May 17, 2028 |  |  |  |  |  |  | May 17, 2028 |  |  |  |  |  |
Adjusted advance notice period |  |  |  |  | 61 days |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Investor Rights Agreement | Dragasac Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of partial liquidating damages on subscription amount |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Legacy Celularity | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares required for voting |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  |  | $ 7.5 |  |  |  |  |  | $ 7.5 |  |  |  |  |  |  |  |
Maximum | Investor Rights Agreement | Dragasac Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of partial liquidating damages on subscription amount |  |  | 6.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  | 730,000,000 |  |  |  | 730,000,000 |  |
Common stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 |  |  | $ 0.0001 | $ 0.0001 |  |
Common stock, shares issued |  |  |  |  |  |  |  |  |  |  |  | 21,984,614 |  |  |  | 19,378,192 |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  | 21,984,614 |  |  |  | 19,378,192 |  |
Class of warrant or right, outstanding |  |  |  |  |  |  |  |  |  |  |  | 10,905,901 |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  |  | 857,142 |  | 923,076 |  |  |  | 857,142 |  |  |  |  |  |  |  |
Purchase and sale of shares |  |  |  | 857,143 |  | 923,077 |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | 2024 Warrant Repricing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  | $ 67.7 |  |  |  |  |  |  |  |  | $ 67.7 |  |  |  |  |  |
Class A Common Stock | March 2023 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 729,698 |
Purchase price of per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 30 |
Purchase and sale of shares |  |  |  |  |  |  | 938,184 |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | March 2023 PIPE Warrants | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of per share |  |  |  |  |  |  | $ 1.25 |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | January 2024 PIPE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price |  |  | $ 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | January 2024 PIPE | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value |  |  | $ 0.0001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of per share |  |  | 1.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price |  |  | $ 2.4898 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants and rights outstanding, expire date |  |  | Jan. 16, 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (years) |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants and rights issued closing date |  |  | Jan. 16, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase and sale of shares |  |  | 2,141,098 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | May 2022 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 82.5
Class A Common Stock | May 2023 PIPE Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of per share |  |  |  |  | $ 5.2 |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase and sale of shares |  |  |  |  | 581,395 |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | May 2023 PIPE Warrants | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of per share |  |  |  |  | $ 1.25 |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | Maximum | March 2023 PIPE Warrants | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  |  |  |  |  | 938,183 |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | Maximum | January 2024 PIPE | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  | 535,274 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A Common Stock | Maximum | May 2023 PIPE Warrants | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding to purchase shares of common stock |  |  |  |  | 581,394 |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | ATM Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Details [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price |  |  |  |  |  |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |
Purchase and sale of shares |  |  |  |  |  |  |  |  |  |  |  | 0 | 13,296 |  |  |  |  |
Average price per share |  |  |  |  |  |  |  |  |  |  | $ 10.6 |  | $ 10.6 |  |  |  |  |

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