Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended
	Feb. 16, 2024	Feb. 15, 2024	Jan. 12, 2024	Mar. 20, 2023	Mar. 14, 2023	Sep. 08, 2022	Mar. 31, 2024	Mar. 31, 2023	Mar. 13, 2024	Feb. 22, 2024	Dec. 31, 2023	Sep. 14, 2023
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							21,808,752				19,378,192
Common stock, shares outstanding							21,808,752				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
Purchase price of per share				$ 8.34
Aggregate purchase price							$ 6,000	$ 9,000
Exercise price									$ 8.1
Fair value of the warrant liability							$ 14,517				$ 3,784
Daily interest accruing rate			18.00%
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
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 | 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							21,808,752				19,378,192
Common stock, shares outstanding							21,808,752				19,378,192
Class of warrant or right, outstanding							10,905,901
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				938,183
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 | 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
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