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Convertible Preferred Stock (Details)
$ in Thousands
 1 Months Ended 3 Months Ended
Sep. 25, 2024
shares
Jul. 03, 2024
shares
Jul. 02, 2024
USD ($)
shares
Apr. 08, 2024
shares
Mar. 26, 2024
business_day
shares
Feb. 11, 2024
shares
Jan. 12, 2024
shares
Dec. 13, 2023
shares
Dec. 05, 2023
shares
Nov. 15, 2023
USD ($)
shares
Nov. 13, 2023
USD ($)
shares
Jul. 31, 2024
USD ($)
shares
Nov. 30, 2023
USD ($)
Sep. 30, 2024
shares
Jun. 30, 2024
shares
Mar. 31, 2024
shares
Dec. 31, 2023
shares
Preferred stock                                  
Temporary equity, shares authorized (in shares)                           0     548,375
Obligation to issue stock (in shares)           49,570.163   49,570.162     148,710.488            
Convertible preferred stock, shares that did not automatically convert (in shares)       166,341.592                          
Preferred stock, shares issued (in shares)                           0     0
Preferred stock, shares outstanding (in shares)                           0     0
Number of business days | business_day         8                        
Related Party                                  
Preferred stock                                  
Issuance of common stock upon exercise of warrants and Conversion of Series A Preferred Stock to common stock (in shares)         65,681                        
Securities Purchase Agreement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                     149,330.115            
Sale of stock, consideration received on transaction | $                     $ 60,250            
Securities Purchase Agreement | Related Party                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                     149,330.115            
Sale of stock, consideration received on transaction | $                     $ 60,250            
July 2024 Purchase Agreement                                  
Preferred stock                                  
Sale of stock, consideration received on transaction | $                       $ 82,800          
July 2024 Purchase Agreement | Dr. Timothy A. Springer | Related Party                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                       1,636,832          
Sale of stock, consideration received on transaction | $     $ 32,737                            
July 2024 Purchase Agreement | TAS Partners LLC | Related Party                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                       721,361          
Sale of stock, consideration received on transaction | $     14,427                            
July 2024 Purchase Agreement | Dr. Chafen Lu | Related Party                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                       1,307          
Sale of stock, consideration received on transaction | $     $ 26                            
July 2024 Purchase Agreement, Tranche One                                  
Preferred stock                                  
Sale of stock, consideration received on transaction | $                       $ 47,200          
November 2023 Private Placement, Tranche One                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)               24,785.081                  
Sale of stock, consideration received on transaction | $                         $ 10,000        
Sale of stock, settlement term                         30 days        
November 2023 Private Placement, Tranche Three                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)           49,570.163                      
Sale of stock, consideration received on transaction | $                         $ 20,000        
Sale of stock, settlement term                         90 days        
November 2023 Private Placement, Tranche Two                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)             49,570.163                    
Sale of stock, consideration received on transaction | $                         $ 20,000        
Sale of stock, settlement term                         60 days        
November 2023 Private Placement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                   619.627 149,330.115            
Sale of stock, consideration received on transaction | $                   $ 250              
November 2023 Private Placement | Dr. Timothy A. Springer | Related Party                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                     99,140.326            
Sale of stock, consideration received on transaction | $                     $ 40,000            
Common stock                                  
Preferred stock                                  
Issuance of common stock upon exercise of warrants and Conversion of Series A Preferred Stock to common stock (in shares) 2,499,976     12,263,951                   2,499,976 12,263,951 65,681  
Common stock | Securities Purchase Agreement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)   3,563,247                              
Common stock | July 2024 Purchase Agreement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)                       3,563,247          
Series B Preferred Stock                                  
Preferred stock                                  
Temporary equity, shares authorized (in shares)     2,937,903                            
Convertible preferred stock (in shares)     1                            
Issuance of common stock upon exercise of warrants and Conversion of Series A Preferred Stock to common stock (in shares) (2,499,976)                                
Convertible preferred stock, shares that did not automatically convert (in shares) 437,927                                
Preferred stock, shares issued (in shares)                           437,927     0
Preferred stock, shares outstanding (in shares)                           437,927     0
Convertible preferred stock, common stock issuable upon conversion (in shares)                           437,927      
Series B Preferred Stock | Securities Purchase Agreement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)     2,937,903                            
Sale of stock, consideration received on transaction | $     $ 130,000                            
Series B Preferred Stock | July 2024 Purchase Agreement                                  
Preferred stock                                  
Sale of stock, number of shares issued in transaction (in shares)     2,937,903                 578,403          
Series A Preferred Stock                                  
Preferred stock                                  
Temporary equity, shares authorized (in shares)                     548,375            
Convertible preferred stock (in shares)         33.333                        
Issuance of common stock upon exercise of warrants and Conversion of Series A Preferred Stock to common stock (in shares)       367,919.247                          
Preferred stock, shares issued (in shares)                           166,341.592     0
Preferred stock, shares outstanding (in shares)                           166,341.592     0
Convertible preferred stock, common stock issuable upon conversion (in shares)                           5,544,719      
Series A Preferred Stock | Minimum                                  
Preferred stock                                  
Beneficial ownership limitation percentage for conversion of common stock issued and outstanding         0.00%                        
Series A Preferred Stock | Maximum                                  
Preferred stock                                  
Beneficial ownership limitation percentage for conversion of common stock issued and outstanding         19.90%                        
Series A Preferred Stock | Old Cartesian | Preferred stock                                  
Preferred stock                                  
Issuance of shares (in shares)                 384,930.724   384,930.724