| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Total Revenues | 0.2 | 0.8 | 1.2 | 1.3 | 1.3 | 1.0 | 0.6 | 0.6 |
| Total Revenues growth | -80.7% | -22.6% | 101.2% | 123.7% | 126.8% | 343.1% | 812.4% | 697.1% |
| Costs and Expenses | | | | | | | | |
| Costs of revenue | 2.0 | 1.9 | 2.0 | 2.2 | 2.5 | 2.4 | 1.9 | 1.3 |
| Research, development and manufacturing operations | 5.6 | 6.2 | 6.0 | 5.8 | 5.4 | 4.8 | 4.1 | 3.4 |
| Selling, general and administrative | 5.8 | 5.5 | 4.7 | 4.6 | 3.6 | 3.6 | 3.3 | 2.8 |
| Share-based compensation | 7.4 | 6.9 | 5.5 | 3.8 | | | | |
| Depreciation and amortization | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Total Costs and Expenses | 21.0 | 20.7 | 18.3 | 16.6 | 11.6 | 10.8 | 9.4 | 7.5 |
| Loss from Operations | -20.7 | -19.9 | -17.1 | -15.3 | -10.3 | -9.8 | -8.8 | -6.9 |
| Operating margin | -8481.1% | -2544.8% | -1394.8% | -1214.2% | -814.9% | -970.5% | -1446.3% | -1226.8% |
| |
| Other Income/(Expense) | | | | | | | | |
| Other income/(expense), net | | 0.0 | 0.0 | -0.2 | -0.2 | | -0.2 | -0.2 |
| Interest expense | -2.4 | -1.7 | -2.7 | -2.6 | -2.5 | -2.6 | -1.1 | -1.2 |
| |
| Change in fair value of derivatives and gain/(loss) on extinguishment of liabilities, net | | | | | | | | |
| Total Other Income/(Expense) | -2.4 | -1.6 | -2.7 | -2.8 | -2.4 | -2.4 | 2.8 | -1.5 |
| Income/(Loss) on Equity Method Investments | 0.0 | | 0.0 | 0.0 | | 0.0 | | |
| Net Income/(Loss) | -23.1 | -21.5 | -19.8 | -18.1 | -12.8 | -12.1 | -6.0 | -8.4 |
| |
| Net Income/(Loss) Per Share (Basic) | ($0.89) | ($0.64) | ($0.67) | ($1.41) | ($1.84) | ($2.22) | ($1.51) | $0.53 |
| Net Income/(Loss) Per Share (Diluted) | ($0.91) | ($0.66) | ($0.69) | ($1.41) | ($1.84) | ($2.22) | ($1.97) | ($0.76) |
| |
| Weighted Average Common Shares Outstanding (Basic) | 36.4 | 32.3 | 28.8 | 22.3 | 15.0 | 8.3 | 3.8 | 3.1 |
| Weighted Average Common Shares Outstanding (Diluted) | 36.4 | 32.3 | 28.8 | 22.3 | 15.0 | 8.3 | 11.0 | 10.9 |
| |
| Other Comprehensive Income/(Loss) | | | | | | | | |
| Foreign currency translation gain/(loss) | 0.0 | 0.0 | | 0.0 | 0.0 | 0.0 | | |
| Net Comprehensive Income/(Loss) | -23.1 | -21.5 | -19.8 | -18.1 | -12.8 | -12.2 | -6.0 | -2.4 |