10-Q Share-based compensation - PSU activity (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Weighted-Average Grant Date Fair Value | ||||||||
| SVS withheld to satisfy statutory tax withholding obligations | [1],[2] | $ 6,444,000 | ||||||
| Performance stock units | ||||||||
| Number of Shares | ||||||||
| Unvested, beginning (in shares) | 3,263,478 | 629,861 | 674,707 | 0 | ||||
| Forfeited (in shares) | (622,681) | (583,446) | (713,942) | (72,084) | ||||
| Vested (in shares) | (928,214) | (119,983) | (132,179) | 0 | ||||
| Granted (in shares) | 2,003,765 | 3,337,046 | 801,275 | 746,791 | ||||
| Unvested, ending (in shares) | 3,716,348 | 3,263,478 | 629,861 | 674,707 | ||||
| Inception-to-date vested (in shares) | 1,180,376 | 252,162 | 132,179 | 0 | ||||
| Weighted-Average Grant Date Fair Value | ||||||||
| Unvested, beginning (in dollars per share) | $ 3.180 | $ 11.430 | $ 8.670 | $ 0 | ||||
| Forfeited (in dollars per share) | 2.820 | 8.430 | 10.110 | 8.670 | ||||
| Vested (in dollars per share) | 3.630 | 10.350 | 8.670 | 0 | ||||
| Granted (in dollars per share) | 6.750 | 2.820 | 12.120 | 8.670 | ||||
| Unvested, ending (in dollars per share) | 5.070 | 3.180 | 11.430 | 8.670 | ||||
| Inception-to-date vested (in dollar per share) | $ 4.860 | $ 9.480 | $ 8.670 | |||||
| Performance stock units | SVS | ||||||||
| Weighted-Average Grant Date Fair Value | ||||||||
| SVS withheld to satisfy statutory tax withholding obligations (in shares) | 320,867 | |||||||
| SVS withheld to satisfy statutory tax withholding obligations | $ 6.855 | |||||||
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