v3.26.1
Nature of the Business and Basis of Presentation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 60 Months Ended
Feb. 24, 2026
Feb. 28, 2026
Dec. 31, 2025
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Nature Of Business And Basis Of Presentation [Line Items]              
Aggregate net proceeds from offering         $ 0 $ 471,159,000  
Accumulated deficit     $ 1,641,219,000   1,735,537,000   $ 1,735,537,000
Cash, cash equivalents, and marketable securities         $ 1,200,000,000   $ 1,200,000,000
Common Stock | Orbital              
Nature Of Business And Basis Of Presentation [Line Items]              
Equity shares held     75,000,000        
Conversion of shares into cash     $ 255,100,000        
Underwritten Public Offering              
Nature Of Business And Basis Of Presentation [Line Items]              
Stock sold during period shares, new issues       16,151,686      
Price per share of shares issued       $ 28.48   $ 28.48  
Warrants to purchase common stock       1,404,988   1,404,988  
Purchase price per warrant       $ 28.47      
Aggregate net proceeds from offering       $ 470,500,000      
Legal, accounting and other fees       $ 800,000      
Maximum | Common Stock | Orbital              
Nature Of Business And Basis Of Presentation [Line Items]              
Additional cash consideration receivable contingent upon escrow release     $ 26,300,000        
Jeffries LLC Sales Agreement              
Nature Of Business And Basis Of Presentation [Line Items]              
Stock sold during period shares, new issues         0   13,769,001
Gross proceeds from issuance of common stock             $ 864,000,000
Jeffries LLC Sales Agreement | Common Stock              
Nature Of Business And Basis Of Presentation [Line Items]              
Stock sold during period shares, new issues             13,769,001
Price per share of shares issued         $ 62.75   $ 62.75
Jeffries LLC Sales Agreement | Maximum | ATM Offering              
Nature Of Business And Basis Of Presentation [Line Items]              
Commission rate             3.00%
Aggregate gross proceeds of shares authorized under ATM sales agreement         $ 1,100,000,000   $ 1,100,000,000
Financing Agreement              
Nature Of Business And Basis Of Presentation [Line Items]              
Potential final financing amount $ 100,000,000            
Maturity date Feb. 24, 2033 Feb. 24, 2033          
Debt instrument, term   7 years          
Interest rate 6.50% 6.50%          
Floor interest rate 1.00% 1.00%          
Financing Agreement | Senior Secured Term Loan              
Nature Of Business And Basis Of Presentation [Line Items]              
Initial draw   $ 100,000,000          
Financing Agreement | Maximum              
Nature Of Business And Basis Of Presentation [Line Items]              
Initial draw   $ 300,000,000