| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Total Revenues | 1.2 | 0.6 | 0.1 | 0.6 | 0.9 | 0.6 | 1.7 | 6.5 |
| Total Revenues growth | 101.2% | 812.4% | -89.6% | -26.0% | 34.3% | -63.2% | -73.3% | 22.5% |
| Costs and Expenses | | | | | | | | |
| Costs of revenue | 2.0 | 1.9 | 0.2 | 0.5 | 1.0 | | | |
| Research, development and manufacturing operations | 6.0 | 4.1 | 1.2 | 1.3 | 2.8 | 4.8 | 6.6 | 6.7 |
| Selling, general and administrative | 4.7 | 3.3 | 1.0 | 1.8 | 3.2 | 5.6 | 10.3 | 12.4 |
| Share-based compensation | 5.5 | | | | | | | |
| Depreciation and amortization | 0.1 | 0.1 | 0.2 | 0.2 | 0.4 | 1.2 | 3.6 | 5.6 |
| Total Costs and Expenses | 18.3 | 9.4 | 2.5 | 3.9 | 7.4 | 14.8 | 26.4 | 34.3 |
| Loss from Operations | -17.1 | -8.8 | -2.5 | -3.3 | -6.6 | -14.1 | -24.6 | -27.7 |
| Operating margin | -1394.8% | -1446.3% | -3684.8% | -509.6% | -761.8% | -2203.1% | -1409.5% | -424.5% |
| |
| Other Income/(Expense) | | | | | | | | |
| Other income/(expense), net | 0.0 | -0.2 | 3.0 | 0.8 | 0.0 | 0.6 | 0.1 | -0.1 |
| Interest expense | -2.7 | -1.1 | -3.5 | -8.9 | -7.4 | -6.5 | -7.9 | -26.5 |
| |
| Change in fair value of derivatives and gain/(loss) on extinguishment of liabilities, net | | | | | | | | |
| Total Other Income/(Expense) | -2.7 | 2.8 | 4.1 | -1.6 | -9.5 | -4.4 | -14.2 | -18.1 |
| Income/(Loss) on Equity Method Investments | 0.0 | | | | | | | |
| Net Income/(Loss) | -19.8 | -6.0 | 1.6 | -4.9 | -16.0 | -18.6 | -38.9 | -45.8 |
| |
| Net Income/(Loss) Per Share (Basic) | ($0.66) | ($1.54) | $1.15 | | ($0.69) | ($3.15) | ($0.42) | ($0.86) |
| Net Income/(Loss) Per Share (Diluted) | ($0.66) | ($1.54) | $0.32 | | ($0.69) | ($3.15) | ($0.42) | ($0.86) |
| |
| Weighted Average Common Shares Outstanding (Basic) | 29.8 | 3.9 | 1.4 | 1,537.6 | 23.2 | 5.9 | 93.0 | 53.5 |
| Weighted Average Common Shares Outstanding (Diluted) | 29.8 | 3.9 | 3.7 | 1,537.6 | 23.2 | 5.9 | 93.0 | 53.5 |
| |
| Other Comprehensive Income/(Loss) | | | | | | | | |
| Foreign currency translation gain/(loss) | 0.0 | | | | | | | |
| Net Comprehensive Income/(Loss) | -19.8 | -6.0 | | | | | | |