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Redeemable Common Stock, Common Stock, and Stockholders' Equity (Deficit) - Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended 36 Months Ended
Sep. 22, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Jul. 28, 2022
USD ($)
$ / shares
shares
Sep. 30, 2023
USD ($)
vote
$ / shares
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2023
USD ($)
vote
$ / shares
shares
Sep. 30, 2022
USD ($)
shares
Dec. 31, 2019
shares
Dec. 31, 2021
shares
Sep. 20, 2023
$ / shares
Class of Warrant or Right [Line Items]                    
Redeemable common stock issued (in shares)                 64,046,223  
Preferred stock, shares authorized (in shares)   0   100,000,000   100,000,000        
Preferred stock, par value (in dollars per share) | $ / shares   $ 0.001   $ 0.001   $ 0.001        
Preferred stock, shares outstanding (in shares)   0   0   0        
Warrants, exercise price (in dollars per share) | $ / shares   $ 0.01   $ 0.01   $ 0.01        
Warrants vested (in shares)       4,526,162 3,935,793 5,706,904 3,935,793      
Warrants granted (in shares)         15,743,174 0 15,743,174      
Restricted common stock, issued (in shares)               142,908    
Restricted common stock liability | $   $ 100                
Payments of stock issuance costs | $ $ 7,600     $ 25,278 $ 307 $ 25,278 $ 307      
Restricted stock outstanding                    
Class of Warrant or Right [Line Items]                    
Aggregate fair value of restricted common stock vested | $           $ 700 $ 900      
Series A Common Stock                    
Class of Warrant or Right [Line Items]                    
Number of votes per common share | vote       1   1        
Series A Common Stock | Conversion of Redeemable Common Stock Into Series B Common Stock                    
Class of Warrant or Right [Line Items]                    
Conversion of common stock (in shares) 64,046,223                  
Series B Common Stock                    
Class of Warrant or Right [Line Items]                    
Number of votes per common share | vote       10   10        
Number of shares convertible (in shares)       1   1        
Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Maximum number of common stock shares in which warrants may be converted (in shares)     15,743,174              
Warrants, exercise price (in dollars per share) | $ / shares     $ 0.01              
Term of warrants (in years)     10 years              
IPO                    
Class of Warrant or Right [Line Items]                    
Issuance price per share (in dollars per share) | $ / shares $ 30.00                 $ 30.00
Shares issued under purchase agreement (in shares) 19,200,000                  
Private Placement | Shopify                    
Class of Warrant or Right [Line Items]                    
Issuance price per share (in dollars per share) | $ / shares     $ 33.88              
Shares issued under purchase agreement (in shares)     2,951,846              
Investment Option                    
Class of Warrant or Right [Line Items]                    
Gross proceeds from issuance of common stock | $     $ 30,600              
Investment Option | Shopify                    
Class of Warrant or Right [Line Items]                    
Issuance price per share (in dollars per share) | $ / shares     $ 88.93              
Additional shares available for purchase (in shares)     15,743,174              
Common Stock                    
Class of Warrant or Right [Line Items]                    
Gross proceeds from issuance of common stock | $     $ 69,400              
Common Stock and Investment Option                    
Class of Warrant or Right [Line Items]                    
Proceeds from sale of stock | $     100,000              
Payments of stock issuance costs | $     $ 400              
Class of Warrant or Right, Vesting Period One | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants, vesting percentage 0.25   0.25              
Class of Warrant or Right, Vesting Periods Two Through Twenty-One | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants, vesting percentage     0.75              
Dividend yield | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants outstanding, measurement input       0   0        
Contractual term | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants outstanding, measurement input     10              
Volatility | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants outstanding, measurement input       0.5500   0.5500        
Risk-free rate | Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                    
Class of Warrant or Right [Line Items]                    
Warrants outstanding, measurement input       0.0285   0.0285