Segments, Geographical Information, Concentrations and Significant Customers - Segment fixed asset additions (Details) - Single reportable segment - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | $ 4,615 | $ 2,587 | $ 8,027 | $ 4,570 |
| Quantum computing fridges | ||||
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | 2,623 | 2,197 | 4,334 | 3,257 |
| Process equipment | ||||
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | 219 | 682 | 6 | |
| Leasehold improvements | ||||
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | 110 | 34 | 194 | 51 |
| IT hardware | ||||
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | 263 | 110 | 352 | 209 |
| Construction in progress and other assets | ||||
| Segment Reporting Information [Line Items] | ||||
| Total property and equipment | $ 1,400 | $ 246 | $ 2,465 | $ 1,047 |