| In millions, except per share items | Dec-31-21 | Dec-31-20 | Mar-31-20 | Dec-31-19 | Mar-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 |
| | 10-K | 10-K | 8-K | 10-K | 8-K | 10-K | 10-K | S-1/A |
| REVENUES | | | | | | | | |
| Total revenues | 34.9 | 20.8 | 18.6 | | 12.5 | | | 13.9 |
| Total revenues growth | 68.2% | | 48.8% | | | | -100.0% | |
| OPERATING COSTS AND EXPENSES | | | | | | | | |
| Cost of goods sold | 2.3 | | | | | | | |
| Research and development | 93.2 | 93.7 | | 63.5 | | 34.3 | 14.3 | |
| Selling, general, and administrative | 54.6 | 44.8 | | 19.5 | | | | |
| Total operating costs and expenses | 150.3 | 140.7 | | 83.0 | | | | |
| Loss from operations | -115.4 | -119.9 | -26.7 | -83.0 | -16.3 | -43.2 | -19.2 | -17.0 |
| Operating margin | -330.8% | -578.0% | -143.6% | | -129.9% | | | -123.0% |
| |
| OTHER INCOME / (LOSS), NET | | | | | | | | |
| NET LOSS | -55.3 | -119.3 | -26.2 | -81.0 | -15.9 | -43.3 | -19.2 | -17.1 |
| |
| Other comprehensive income/(loss) | | | | | | | | |
| Foreign currency translation | 1.9 | -0.6 | | 0.0 | | 0.2 | -0.2 | |
| COMPREHENSIVE LOSS | -53.4 | -119.9 | -26.2 | -81.0 | -15.9 | -43.1 | -19.4 | |
| |
| Net loss per share attributable to common stockholders, basic | ($1.28) | ($2.97) | ($0.66) | ($2.30) | ($0.47) | ($1.50) | ($0.99) | ($1.21) |
| Net loss per share attributable to common stockholders, diluted | ($1.28) | ($2.97) | ($0.66) | ($2.30) | ($0.47) | ($1.50) | ($0.99) | ($1.21) |
| |
| Weighted average common shares outstanding, basic (in shares) | 43.2 | 40.1 | 39.8 | 35.2 | 34.2 | 28.8 | 19.4 | 0.0 |
| Weighted average common shares outstanding, diluted (in shares) | 43.2 | 40.1 | | 35.2 | | | | |