v3.25.2
Summary of Significant Accounting Policies - Narrative (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Aug. 12, 2021
USD ($)
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2025
USD ($)
segment
$ / shares
shares
Jun. 30, 2024
USD ($)
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Mar. 21, 2025
$ / shares
Mar. 20, 2025
$ / shares
Feb. 11, 2025
$ / shares
Dec. 17, 2024
$ / shares
Jan. 12, 2024
$ / shares
Cash and Cash Equivalents [Line Items]                        
Allowance for doubtful accounts   $ 0   $ 0   $ 0            
Deferred fulfillment and prepaid launch costs   4,100,000   4,100,000   2,600,000            
Recorded revenue   200,000 $ 1,200,000 400,000 $ 1,700,000              
Contract with customer, liability   3,100,000   3,100,000   2,200,000            
Contract liabilities, non-current   187,000   187,000   1,901,000            
Service revenue   191,000 1,209,000 513,000 1,722,000              
Contract with customer, liability           100,000 $ 40,000.00          
Warrants and rights outstanding, term (in years)                   5 years 5 years  
Exercise price (in dollars per share) | $ / shares                   $ 4.3175 $ 6.82 $ 13.44
Estimated fair value of warrants   3,000   3,000   3,000            
Impairments of long-lived assets   0 0 0 0              
Defined contribution plan, cost   $ 0 $ 0 $ 0 $ 0              
Number of reportable segments | segment       1                
Number of operating segments | segment       1                
May 2025 Convertible Note (Level 3)                        
Cash and Cash Equivalents [Line Items]                        
Warrants and rights outstanding, term (in years)   1 year 6 months   1 year 6 months                
May 2025 Loan (Level 3)                        
Cash and Cash Equivalents [Line Items]                        
Warrants and rights outstanding, term (in years)   9 months 7 days   9 months 7 days                
Prepaid Expenses and Other Current Assets                        
Cash and Cash Equivalents [Line Items]                        
Deferred fulfillment and prepaid launch costs   $ 2,800,000   $ 2,800,000   0            
Other Noncurrent Assets                        
Cash and Cash Equivalents [Line Items]                        
Deferred fulfillment and prepaid launch costs   $ 1,300,000   $ 1,300,000   $ 2,600,000            
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | Geographic Distribution, Foreign                        
Cash and Cash Equivalents [Line Items]                        
Percentage of derived from customers   0.00%   0.00%                
Restricted Stock Units                        
Cash and Cash Equivalents [Line Items]                        
Expected term       6 months                
ESPP                        
Cash and Cash Equivalents [Line Items]                        
Offering period       6 months                
Common Class A                        
Cash and Cash Equivalents [Line Items]                        
Warrants and rights outstanding, term (in years)   5 years   5 years                
Number of warrants outstanding (in shares) | shares   740,429   740,429                
Exchange ratio   1   1                
Exercise price (in dollars per share) | $ / shares   $ 8,050   $ 8,050       $ 1.93 $ 3.80   $ 6.08  
Expiration period       5 years                
Common Class B                        
Cash and Cash Equivalents [Line Items]                        
Warrants and rights outstanding, term (in years)   1 year 6 months   1 year 6 months                
Private Placement Warrant                        
Cash and Cash Equivalents [Line Items]                        
Number of warrants outstanding (in shares) | shares   16,104 16,104 16,104 16,104              
Estimated fair value of warrants $ 31,200,000                      
Public Warrant                        
Cash and Cash Equivalents [Line Items]                        
Number of warrants outstanding (in shares) | shares   12,322 12,322 12,322 12,322              
Issuance of common stock and related warrants in registered offering, net of issuance costs $ 20,200,000                      
Patents                        
Cash and Cash Equivalents [Line Items]                        
Intangible asset useful life   10 years   10 years