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Commitments and Contingencies - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
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