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Commitments and Contingencies - Additional Information (Details) - USD ($) |  |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
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Feb. 21, 2024 | Nov. 16, 2022 | Dec. 23, 2016 | Dec. 22, 2016 | Nov. 20, 2014 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2021 | Jul. 01, 2025 | Apr. 11, 2025 | Mar. 04, 2025
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenditures amount |  |  |  |  | $ 265,000 |  |  |  |  |  |  |  |  |
Issued RSUs shares (in Shares) |  | 48,140 |  |  |  |  |  |  |  |  |  |  |  |
Aggregate value |  | $ 207,000 |  |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities |  |  |  |  |  | $ 308,000 |  | $ 308,000 |  | $ 265,000 |  |  |  |
Accrued expenses |  |  |  |  |  | 1,905,000 |  | 1,905,000 |  | 1,820,000 |  |  |  |
Accounts payable |  |  |  |  |  | 700,000 |  | 700,000 |  | 99,000 |  |  |  |
Revenues |  |  |  |  |  | 316,000 | $ 468,000 | 697,000 | $ 1,016,000 |  |  |  |  |
License fee |  |  |  |  | 5,000 |  |  | 0 |  | 0 |  |  |  |
Cash payment |  |  |  |  | $ 50,000 |  |  |  |  |  |  |  |  |
Agreement term |  |  |  |  | 20 years |  |  |  |  |  |  |  |  |
Milestone payment |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |
Milestone fees payable |  |  |  |  |  |  |  | 25,000 |  | 45,000 |  |  |  |
Reimbursement |  |  |  |  |  |  |  | 21,307 |  |  |  |  |  |
Annual royalty fee |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |
Annual net sales percentage |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |
Payment of royalty from the first commercial sale in period |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Percentage of decrease in royalty |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
Net sales of sub licensees percentage |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |
Percentage of equity grant received on fully diluted basis in outstanding units |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |
Payment of extension fee |  |  |  | $ 5,000 |  |  |  |  |  |  |  |  |  |
Agreement termination within written notice period |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Initial fee paid |  |  | $ 250,000 |  |  |  |  |  |  |  |  |  |  |
License agreement amount |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |
Consulting fees earned |  |  | $ 27,000 |  |  |  |  |  |  |  |  |  |  |
License agreement term |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |
Incurred term |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |
Award amount |  |  |  |  |  |  |  | $ 3,000,000 |  |  |  |  |  |
U. S. Food And Administration [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Milestone acievement period on approval of the last commercialized product |  |  |  | 20 years |  |  |  |  |  |  |  |  |  |
Supply Agreement [Member] | Secretome [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement term | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
Initial start-up payment received | $ 242,400 |  |  |  |  |  |  |  |  |  |  |  |  |
Technology transfer, documentation preparation, training, and testing costs | 210,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Project management fees | 2,400 |  |  |  |  |  |  |  |  |  |  |  |  |
Suite reservation fee | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Potential amount receivable for each product lot | 55,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments receivable for each additional product lot in excess of initial training run lots | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly manufacturing suite reservation fee | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Hourly fee for project management services | $ 240 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage markup on the value of materials compensated | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Outsourced testing fee per batch receivable | $ 500 |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly payment receivable for in process samples and vialed harvests for training | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Standard fee receivable for product packing, handling and shipping | 750 |  |  |  |  |  |  |  |  |  |  |  |  |
Increased fee for expedited or special hour service | $ 1,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement termination description |  |  |  |  |  |  |  | Either party may terminate the agreement for cause and upon notice in the event of a material breach, within (i) 30 days of an uncured material breach that is not a payment default or (ii) 10 days for an uncured payment default. The Secretome Agreement further provides that either party may terminate the agreement at any time upon 90 days’ notice to the other party |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |
Maximum [Member] | Supply Agreement [Member] | Secretome [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual royalty fee |  |  |  | $ 10,000 |  |  |  |  |  |  |  |  |  |
Longeveron [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to UM |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |
UM Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to UM |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |
Milestone fees payable |  |  |  |  |  |  |  | 15,000 |  | 15,000 |  |  |  |
UM License [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
License fee |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |
Payments to UM |  |  |  |  |  |  |  | 480,000 |  |  |  |  |  |
first Phase 3 Clinical Trial [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Completion of trial |  |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |
Biologics license [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
License fee |  |  |  |  | $ 250,000 |  |  |  |  |  |  |  |  |
Chief Science Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued consulting fees |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,000 | $ 45,000
Performance bonus |  |  |  |  |  |  |  |  |  |  |  |  | $ 131,000 | $ 131,000
Other long-term liabilities |  |  |  |  |  | 300,000 |  | 300,000 |  | 300,000 |  |  |  |
Accrued expenses |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |
Consulting fees earned |  |  |  |  |  | 30,000 |  |  |  |  |  |  |  |
Chief Science Officer [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued expenses |  |  |  |  |  | $ 100,000 |  | $ 100,000 |  |  |  |  |  |
Class A Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unregistered shares (in Shares) |  |  |  |  | 11,039 |  |  |  |  |  |  |  |  |
Class A Common Stock [Member] | Chief Science Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options to purchase comon stock |  |  |  |  |  |  |  |  |  |  |  |  | 184,878 | 71,254
Class A Common Stock [Member] | Chief Science Officer [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fully vested options to purchase shares of common stock |  |  |  |  |  |  |  |  |  |  |  | 49,219 |  |
Series C Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (in Shares) |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |
Company value amount |  |  | $ 250,000 |  |  |  |  |  |  |  |  |  |  |

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