| Line Item | Jun 30, 2026 | Mar 31, 2026 | Jun 30, 2025 | Mar 31, 2025 |
|---|---|---|---|---|
| Revenues | ||||
| Costs and expenses: | ||||
| Operation and maintenance | ||||
| Research and development (income) expense, net | ||||
| General and administrative expense | ||||
| Operating lease expense | ||||
| Depreciation and amortization | ||||
| Operating loss | ||||
| % of revenue | -25435.4% | -32872.1% | ||
| Other income (expense): | ||||
| Interest income | ||||
| Interest expense | ||||
| Other non-operating expense, net | ||||
| Loss before income taxes | ||||
| Income tax expense | — | |||
| Net loss | ||||
| % of revenue | -49482.3% | -52180.3% | ||
| Net loss | ||||
| % of revenue | -49482.3% | -52180.3% | ||
| Net loss attributable to common stock, basic | ||||
| Net loss attributable to common stock, diluted | ||||
| Net loss per share attributable to common stockholders, basic (in usd per share) | ||||
| Net loss per share attributable to common stockholders, diluted (in usd per share) |