Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)

v3.26.3
Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Assets measured at fair value    
Cash equivalents $ 483,811 $ 218,080
Fair value 1,676,339 1,167,106
Total fair value of assets 2,160,150 1,385,186
Liabilities measured at fair value    
Warrant liability 12,139 104,878
Earnout shares liability 56,138 156,692
EBITDA Earnout liability   13,424
Total fair value of liabilities 68,277 274,994
Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability   56,392
Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 12,139 48,486
Money market funds    
Assets measured at fair value    
Cash equivalents 471,798 218,080
Term deposits    
Assets measured at fair value    
Fair value 30,580 30,937
Asset-backed securities    
Assets measured at fair value    
Fair value 24,442 94,183
Government debt securities    
Assets measured at fair value    
Fair value 1,229,101 641,172
Municipal securities    
Assets measured at fair value    
Cash equivalents 12,013  
Fair value 236,011  
Corporate debt securities    
Assets measured at fair value    
Fair value 156,205 400,814
Level 1    
Assets measured at fair value    
Cash equivalents 471,798 218,080
Fair value 0 0
Total fair value of assets 471,798 218,080
Liabilities measured at fair value    
Warrant liability 0 56,392
Earnout shares liability 0 0
EBITDA Earnout liability   0
Total fair value of liabilities 0 56,392
Level 1 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability   56,392
Level 1 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 1 | Money market funds    
Assets measured at fair value    
Cash equivalents 471,798 218,080
Level 1 | Term deposits    
Assets measured at fair value    
Fair value 0 0
Level 1 | Asset-backed securities    
Assets measured at fair value    
Fair value 0 0
Level 1 | Government debt securities    
Assets measured at fair value    
Fair value 0 0
Level 1 | Municipal securities    
Assets measured at fair value    
Cash equivalents  
Fair value 0  
Level 1 | Corporate debt securities    
Assets measured at fair value    
Fair value 0 0
Level 2    
Assets measured at fair value    
Cash equivalents 12,013 0
Fair value 1,676,339 1,167,106
Total fair value of assets 1,688,352 1,167,106
Liabilities measured at fair value    
Warrant liability 0 0
Earnout shares liability 0 0
EBITDA Earnout liability   0
Total fair value of liabilities 0 0
Level 2 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability   0
Level 2 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 0 0
Level 2 | Money market funds    
Assets measured at fair value    
Cash equivalents 0 0
Level 2 | Term deposits    
Assets measured at fair value    
Fair value 30,580 30,937
Level 2 | Asset-backed securities    
Assets measured at fair value    
Fair value 24,442 94,183
Level 2 | Government debt securities    
Assets measured at fair value    
Fair value 1,229,101 641,172
Level 2 | Municipal securities    
Assets measured at fair value    
Cash equivalents 12,013  
Fair value 236,011  
Level 2 | Corporate debt securities    
Assets measured at fair value    
Fair value 156,205 400,814
Level 3    
Assets measured at fair value    
Cash equivalents 0 0
Fair value 0 0
Total fair value of assets 0 0
Liabilities measured at fair value    
Warrant liability 12,139 48,486
Earnout shares liability 56,138 156,692
EBITDA Earnout liability   13,424
Total fair value of liabilities 68,277 218,602
Level 3 | Common stock warrant liabilities (Public)    
Liabilities measured at fair value    
Warrant liability   0
Level 3 | Common stock warrant liabilities (Delta)    
Liabilities measured at fair value    
Warrant liability 12,139 48,486
Level 3 | Money market funds    
Assets measured at fair value    
Cash equivalents 0 0
Level 3 | Term deposits    
Assets measured at fair value    
Fair value 0 0
Level 3 | Asset-backed securities    
Assets measured at fair value    
Fair value 0 0
Level 3 | Government debt securities    
Assets measured at fair value    
Fair value 0 0
Level 3 | Municipal securities    
Assets measured at fair value    
Cash equivalents  
Fair value 0  
Level 3 | Corporate debt securities    
Assets measured at fair value    
Fair value $ 0 $ 0