Equity (Details Narrative) $ / shares in Units, $ in Thousands																3 Months Ended				9 Months Ended			12 Months Ended
		Jul. 29, 2025 USD ($)	Jul. 24, 2025 USD ($) $ / shares	Jul. 22, 2025 USD ($)	Jul. 21, 2025 USD ($) $ / shares shares	Jul. 14, 2025 USD ($) $ / shares shares	Jun. 23, 2025 USD ($) $ / shares shares	Feb. 12, 2025 USD ($) $ / shares shares	Jan. 24, 2025 USD ($) $ / shares shares	Mar. 13, 2024 USD ($) Integer $ / shares shares	Jan. 12, 2024 USD ($) $ / shares shares	Jul. 31, 2023 USD ($) $ / shares shares	May 18, 2023 USD ($) $ / shares shares	Apr. 10, 2023 USD ($) $ / shares shares	Sep. 08, 2022 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares		Sep. 30, 2024 USD ($)	Mar. 31, 2024 shares	Sep. 30, 2025 USD ($) $ / shares shares		Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Jun. 22, 2025 $ / shares	Nov. 25, 2024 $ / shares	Mar. 12, 2024 $ / shares	May 18, 2022 $ / shares
Class of Stock [Line Items]
Common stock, shares authorized | shares																730,000,000				730,000,000			730,000,000
Common stock, par value																$ 0.0001				$ 0.0001			$ 0.0001
Common stock shares outstanding | shares																28,216,485				28,216,485			22,546,671
Common stock, voting rights																				common stock are entitled to one vote per share
Preferred stock, shares authorized | shares																10,000,000				10,000,000			10,000,000
Preferred stock, shares outstanding | shares																0				0			0
Number of share purchase | shares												857,142
Proceeds from warrant exercises | $												$ 3,000		$ 6,000						$ 2,460
Warrants exercisable										$ 8.10		$ 7.50		$ 7.50											$ 2.85
Warrant term														5 years
Debt instrument payment | $												$ 2,740		$ 5,505
Fair value of the warrant liability | $												$ 2,645		4,280
Additional warrant liability | $														$ 1,389
Reduced exercise price												$ 3.50
Warrant liabilities | $												$ 511				$ 3,524				3,524			$ 3,264
Warrant term																									5 years
Daily interest accruing rate											18.00%
Damages sought, value | $																				0			$ 418
Net loss available to common stockholders | $																				64
Proceeds from issuance of common stock | $																				$ 1,035
Number of warrant shares | shares																17,064,071				17,064,071
Repayments of Other Debt | $																				$ 1,069
Floor price																									$ 1.00
Fair value of warrants | $																$ 4,264		$ (714)		$ 5,298		$ 1,156
Expected term																				6 years		5 years 6 months
Expected volatility																				104.90%		110.80%
Risk-free interest rate																				4.00%		4.50%
Dividend rate																				0.00%		0.00%
Loss on fair value of warrants | $																$ 36				$ 36
C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								$ 2.84		$ 5.90
Number of warrants repriced | shares								50,000		50,000
Repayments of Other Debt | $		$ 5,900
Floor price			$ 1.50					$ 1.50
Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Warrants exercisable							$ 2.50																	$ 10.00
Expiration date							Jun. 30, 2030
Number of warrants repriced | shares							1,299,465
January 2024 PIPE Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable											$ 67.70
Proceeds from private placements | $											$ 909
Number of warrants repriced | shares											652,981
Fair value of warrant modification | $											$ 524
2024 Warrant Repricing [Member]
Class of Stock [Line Items]
Warrants exercisable											$ 2.49
Number of warrants repriced | shares											652,981
Warrant expiration date											Mar. 16, 2025
June 2025 PIPE [Member]
Class of Stock [Line Items]
Warrants exercisable																$ 2.50				$ 2.50
Number of warrant shares | shares																1,311,092				1,311,092
Warrant expiration date																				Jun. 30, 2030
Private Placement [Member] | Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Warrant term						2 years
Number of share issue | shares						1,230,769
Private Placement [Member] | January 2024 PIPE Warrants [Member]
Class of Stock [Line Items]
Purchase price of per share											$ 1.25
Proceeds from sale of private placement | $											$ 6,000
Minimum [Member]
Class of Stock [Line Items]
Warrants exercisable												$ 3.50
Minimum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								1.69
Minimum [Member] | Investor Rights Agreement [Member] | Dragasac Limited [Member]
Class of Stock [Line Items]
Percentage of partial liquidating damages											1.00%
Minimum [Member] | 2024 Warrant Repricing [Member]
Class of Stock [Line Items]
Warrants exercisable									$ 2.07		$ 2.49
Maximum [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares												892,856
Maximum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								5.90
Maximum [Member] | Investor Rights Agreement [Member] | Dragasac Limited [Member]
Class of Stock [Line Items]
Percentage of partial liquidating damages											6.00%
Maximum [Member] | 2024 Warrant Repricing [Member]
Class of Stock [Line Items]
Warrants exercisable									$ 2.49		$ 67.70
Preferred Stock [Member] | Minimum [Member] | Legacy Celularity [Member]
Class of Stock [Line Items]
Percentage of shares required for voting																				50.00%
At the Market Sales Agreement [Member]
Class of Stock [Line Items]
Sales agents commission rate																				3.00%
May 2022 Private Investment in Public Equity Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable																$ 3.50				$ 3.50
Expiration date																Oct. 10, 2028				Oct. 10, 2028
Number of warrant shares | shares																405,405				405,405
May 2022 Private Investment in Public Equity Warrant [Member]
Class of Stock [Line Items]
Amended termination date description														date to five and one-half years following the closing of the offering or October 10, 2028.
May 2023 Private Investment in Public Equity Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable													$ 10.00			$ 2.50	[1]			$ 2.50	[1]
Proceeds from sale of private placement | $													$ 3,750
Expiration date													May 17, 2028			Jun. 30, 2030	[1]			Jun. 30, 2030	[1]
Adjusted advance notice period													61 days
Number of warrant shares | shares	[1]															581,394				581,394
2024 Warrants [Member]
Class of Stock [Line Items]
Number of share purchase | shares									535,274
Proceeds from warrant exercises | $									$ 2,460
2024 Warrants [Member] | Minimum [Member]
Class of Stock [Line Items]
Purchase price of per share									$ 2.07
2024 Warrants [Member] | Maximum [Member]
Class of Stock [Line Items]
Purchase price of per share									$ 2.49
Common Stock [Member]
Class of Stock [Line Items]
Number of share purchase | shares																			2,141,098
Common Stock [Member] | Warrant [Member] | RWI Forbearance Agreement [Member]
Class of Stock [Line Items]
Warrants exercisable										$ 5.90
Expiration date										Jun. 20, 2028
Common Stock [Member] | Warrant [Member] | March 2023 Loan Warrants [Member] | Starr Forbearance Agreement [Member]
Class of Stock [Line Items]
Warrants exercisable										$ 5.90																$ 7.10
Number of warrant shares | shares										75,000
Warrant expiration date										Mar. 17, 2028
Common Stock [Member] | Warrant [Member] | June 2023 Loan Warrants [Member] | Starr Forbearance Agreement [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable										$ 5.90																$ 8.10
Number of warrant shares | shares										50,000
Warrant expiration date										Jun. 20, 2028
Common Stock [Member] | Maximum [Member] | Warrant [Member] | RWI Forbearance Agreement [Member]
Class of Stock [Line Items]
Number of warrants repriced | shares										300,000
Warrants [Member] | Resorts World Inc Pte Ltd [Member]
Class of Stock [Line Items]
Floor price								$ 1.50
March 2023 Loan Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable	[2]															$ 1.69				$ 1.69
Expiration date	[2]															Mar. 17, 2028				Mar. 17, 2028
Number of warrant shares | shares	[2]															75,000				75,000
March 2023 Loan Warrants [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Expiration date								Mar. 17, 2028
Number of warrant shares | shares								75,000
March 2023 Loan Warrants [Member] | Minimum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								$ 1.69
March 2023 Loan Warrants [Member] | Maximum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								$ 5.90
June 2023 Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable	[2]															$ 1.69				$ 1.69
Expiration date	[2]															Jun. 20, 2028				Jun. 20, 2028
Number of warrant shares | shares	[2]															50,000				50,000
June 2023 Warrants [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Expiration date								Jun. 20, 2028
Number of warrant shares | shares								50,000
June 2023 Warrants [Member] | Minimum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								$ 1.69
June 2023 Warrants [Member] | Maximum [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants exercisable								$ 5.90
July 2025 PIPE Warrants [Member]
Class of Stock [Line Items]
Warrants exercisable																$ 1.50				$ 1.50
Expiration date																Jul. 14, 2030				Jul. 14, 2030
Number of warrant shares | shares																1,230,769				1,230,769
July 2025 PIPE Warrants [Member] | Private Placement [Member] | Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Warrants exercisable						$ 1.50
Proceeds from sale of private placement | $						$ 2,000
Number of share issue | shares						1,230,769
Share price						$ 1.625
Fair value of warrants | $						$ 2,265
Exercise price						$ 1.50
Expected term						5 years
Expected volatility						98.88%
Risk-free interest rate						3.98%
KTL Warrant [Member]
Class of Stock [Line Items]
Warrants exercisable																$ 2.53				$ 2.53
Expiration date																Jul. 21, 2030				Jul. 21, 2030
Number of warrant shares | shares																3,700,000				3,700,000
Debt Instrument, Unamortized Discount | $																$ 858				$ 858
KTL Warrant [Member] | Lim Kok Thay [Member]
Class of Stock [Line Items]
Warrants exercisable			$ 2.528		$ 2.53
Warrant term			5 years
Debt principal amount | $					$ 6,812
Debt Instrument, Maturity Date					Mar. 21, 2026
Fair value of warrants | $			$ 9,186		$ 9,150
Exercise price			$ 2.528		$ 2.52
Expected term			4 years 11 months 26 days		5 years
Expected volatility			99.19%		99.05%
Risk-free interest rate			3.98%		3.91%
Debt doiscount percentage					20.00%
Dividend rate			0.00%		0.00%
Equity Purchase Agreement [Member] | Yorkville [Member]
Class of Stock [Line Items]
Sale of stock, maximum average daily traded amount (in percent)										100.00%
Sale of stock, maximum average daily traded amount, threshold consecutive trading days | Days | Integer										5
Sale of stock, percentage based on volume weighted average price										97.00%
Cash due diligence fee | $										$ 25
Commitment fee in shares | shares										16,964
Payments of stock issuance costs | $										$ 125
Equity Purchase Agreement [Member] | Yorkville [Member] | Convertible Promissory Notes [Member]
Class of Stock [Line Items]
Line of credit percentage										18.00%
Common Class A [Member]
Class of Stock [Line Items]
Common stock, shares authorized | shares																730,000,000				730,000,000			730,000,000
Common stock, par value																$ 0.0001				$ 0.0001			$ 0.0001
Common stock shares outstanding | shares																28,216,485				28,216,485			22,546,671
Number of share purchase | shares														923,076
Warrants to purchase aggregate shares | shares												857,142		923,076		17,064,071				17,064,071
Purchase price of per share												$ 3.50		$ 6.50
Common Class A [Member] | June 2025 PIPE [Member] | Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Number of share purchase | shares							739,286
Purchase price of per share							$ 1.40
Proceeds from sale of private placement | $							$ 1,035
Proceeds from issuance of common stock | $				$ 1,035
Common Class A [Member] | Private Placement [Member] | January 2024 PIPE Warrants [Member]
Class of Stock [Line Items]
Common stock, par value											$ 0.0001
Number of share purchase | shares											2,141,098
Warrants exercisable											$ 2.49
Expiration date											Jan. 16, 2029
Warrant term											5 years
Common Class A [Member] | Maximum [Member] | Private Placement [Member] | January 2024 PIPE Warrants [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares											535,274
Common Class A [Member] | May 2022 Private Investment in Public Equity Warrants [Member] | Minimum [Member]
Class of Stock [Line Items]
Purchase price of per share																											$ 7.50
Common Class A [Member] | May 2022 Private Investment in Public Equity Warrants [Member] | Maximum [Member]
Class of Stock [Line Items]
Purchase price of per share																											$ 82.50
Common Class A [Member] | May 2023 Private Investment in Public Equity Warrants [Member]
Class of Stock [Line Items]
Number of share purchase | shares													581,394
Warrants to purchase aggregate shares | shares													581,394
Purchase price of per share													$ 5.20
Common Class A [Member] | May 2023 Private Investment in Public Equity Warrants [Member] | Private Placement [Member]
Class of Stock [Line Items]
Purchase price of per share													$ 1.25
Common Class A [Member] | 2020 Warrants [Member]
Class of Stock [Line Items]
Number of share purchase | shares									652,981
Common Class A [Member] | Warrants [Member] | C.V. Starr Co Inc [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares								100,000
Warrant term								5 years
Debt principal amount | $								$ 5,000
Debt Instrument, Unamortized Discount | $								100
Repayments of Other Debt | $								$ 800
Floor price								$ 1.50
Common Class A [Member] | Warrants [Member] | Resorts World Inc Pte Ltd [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares								500,000
Warrant term								5 years
Debt principal amount | $								$ 27,000
Debt Instrument, Unamortized Discount | $								$ 3,750
Debt Instrument, Maturity Date								Feb. 15, 2026
Repayments of Other Debt | $								$ 1,300
Floor price								$ 1.50
Common Class A [Member] | KTL Warrant [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares					3,700,000
Warrants exercisable					$ 2.53
Common Class A [Member] | KTL Warrant [Member] | Lim Kok Thay [Member]
Class of Stock [Line Items]
Warrants to purchase aggregate shares | shares					3,700,000
Common Class A [Member] | Equity Purchase Agreement [Member] | Yorkville [Member]
Class of Stock [Line Items]
Common stock, par value										$ 0.0001
Consideration shares of common stock | $										$ 10,000
Common Stock [Member] | At the Market Sales Agreement [Member]
Class of Stock [Line Items]
Aggregate offering price | $															$ 150,000

[1] In connection with the June 23, 2025, Securities Purchase Agreement described above, the Company agreed to reprice an aggregate 1,299,465 warrants from $10.00 to $2.50 and to extend the expiration from dates in May 2028 to June 30, 2030.

[2] In connection with the execution of the Starr Forbearance Agreement on March 13, 2024, described above under Warrant Modification and further in Note 11, the Company agreed to reprice 75,000 warrants with a previous exercise price of $7.10 and 50,000 warrants with a previous exercise price of $8.10 held by C.V. Starr to a new exercise price of $5.90. The term of the warrants was unchanged. The 75,000 warrants and 50,000 warrants were both further repriced on February 12, 2025 from an exercise price of $5.90 per share to $1.69 per share.