Leases - Additional Information (Details) $ in Thousands			12 Months Ended
	Sep. 14, 2023 USD ($)	Mar. 13, 2019 USD ($) ft²	Dec. 31, 2023 USD ($) ft²	Dec. 31, 2022 USD ($)
Leases [Line Items]
Right-of-use assets - operating leases			$ 10,990	$ 13,060
Operating lease liability			$ 26,177
Area of building | ft²			147,215
Restricted cash			$ 9,936	14,836
Weighted average remaining lease term			22 years 3 months 18 days
Weighted average discount rate			14.24%
Rent expense			$ 3,750	3,803
Change in accounting principle, accounting standards update, adoption date			Jan. 01, 2023
Change in accounting principle, accounting standards update, adopted			true
Accumulated deficit			$ (841,791)	(645,496)
Monthly lease payments			2,995	2,834
Florham Park, New Jersey
Leases [Line Items]
Right-of-use assets - operating leases	$ 2,083
Operating lease liability	2,083
Reduction in line of credit	4,900
New line of credit	9,883
Base rental payments	$ 400
Office, Manufacturing and Laboratory Space | Florham Park, New Jersey | Legacy Celularity
Leases [Line Items]
Area of building | ft²		147,215
Restricted cash			$ 14,722	$ 14,722
Operating lease expiry year		2036
Option to renew lease for two additional term period		5 years
Operating lease commencement date		Mar. 01, 2020
Initial monthly base rent		$ 230
Tenant improvement allowance		$ 14,722