v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
Jul. 01, 2025
Mar. 21, 2025
$ / shares
Mar. 20, 2025
$ / shares
Feb. 11, 2025
$ / shares
Dec. 17, 2024
$ / shares
Cash and Cash Equivalents [Line Items]                      
Restricted cash, current $ 106,000   $ 106,000   $ 55,000            
Allowance for doubtful accounts 0   0   0            
Deferred fulfillment and prepaid launch costs 2,900,000   2,900,000   6,300,000            
Recorded revenue 0 $ 200,000 2,700,000 $ 400,000              
Contract with customer, liability 300,000   300,000   4,200,000            
Contract liabilities, non-current 120,000 100,000 120,000 100,000 120,000            
Service revenue 25,000 191,000 3,240,000 513,000              
Contract with customer, liability         $ 600,000 $ 100,000          
Exercise price (in dollars per share) | $ / shares                   $ 77.07  
Warrants and rights outstanding, term (in years)             5 years     5 years 5 years
Impairments of long-lived assets     0 0              
Defined contribution plan, cost $ 0 $ 0 $ 0 $ 0              
Number of operating segments | segment     1                
Number of reportable segments | segment     1                
Underlying Investor Warrants (BSM)                      
Cash and Cash Equivalents [Line Items]                      
Exercise price (in dollars per share) | $ / shares         $ 0.00001            
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | Geographic Distribution, Foreign                      
Cash and Cash Equivalents [Line Items]                      
Percentage of derived from customers 1.00%   1.00%                
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]                      
Exercise price (in dollars per share) | $ / shares               $ 34.45 $ 67.83   $ 108.53
Warrants and rights outstanding, term (in years) 5 years   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                
Patents                      
Cash and Cash Equivalents [Line Items]                      
Intangible asset useful life 10 years   10 years                
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsNoncurrent                      
Cash and Cash Equivalents [Line Items]                      
Deferred fulfillment and prepaid launch costs $ 1,400,000   $ 1,400,000   $ 1,200,000            
Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent                      
Cash and Cash Equivalents [Line Items]                      
Deferred fulfillment and prepaid launch costs $ 1,500,000   $ 1,500,000   $ 5,100,000