| In millions, except per share items | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Mar-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| REVENUE | 0.1 | | | | | |
| COST OF REVENUE | 0.1 | | | | | |
| Gross margin | 0.0 | | | | | |
| Gross margin | 1.5% | | | | | |
| |
| OPERATING EXPENSES: | | | | | | |
| Research and development expense | 5.6 | 2.4 | | | | |
| General and administrative expense | 16.7 | 5.1 | 1.1 | | | 0.0 |
| Total operating expenses | 22.3 | 7.5 | 1.1 | 3.5 | 0.1 | 0.0 |
| LOSS FROM OPERATIONS | -22.3 | -7.5 | -1.1 | -3.5 | -0.1 | 0.0 |
| Operating margin | -16425.7% | | | | | |
| Interest expense | -0.7 | -2.1 | | | | |
| Gain on change in fair value of warrant liabilities | 5.2 | 0.9 | | | | |
| Other income (expense), net | 0.0 | 0.0 | | | | |
| LOSS BEFORE INCOME TAXES | -17.8 | -8.6 | | | | |
| COMPREHENSIVE LOSS | -17.8 | -8.6 | | | | |
| NET LOSS | -17.8 | -8.6 | 12.5 | -3.4 | -0.1 | 0.0 |
| |
| LOSS PER SHARE: | | | | | | |
| Basic loss per share (in dollars per share) | ($0.15) | ($0.10) | | ($0.54) | | |
| Diluted loss per share (in dollars per share) | ($0.15) | ($0.10) | | ($0.54) | | |
| |
| Basic weighted shares outstanding (in shares) | 118.8 | 84.0 | 7.2 | 31.5 | 31.6 | 6.3 |
| Diluted weighted shares outstanding (in shares) | 118.8 | 84.0 | | | | |