| 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 |
| Revenue: | | | | | | | | |
| Revenue | 0.9 | 1.2 | | | 0.4 | 0.9 | | |
| Revenue growth | 128.2% | 34.4% | | | | | | |
| Expenses: | | | | | | | | |
| Cost of product revenues | 0.1 | 0.0 | | | 0.1 | 0.0 | | |
| Research and development | 8.5 | 8.3 | | | 5.0 | 3.5 | | |
| Selling, general and administrative | 5.3 | 4.4 | | | 2.9 | 2.5 | | |
| Total expenses | 28.7 | 26.0 | | | 8.0 | 6.0 | | |
| Loss from operations | -13.0 | -11.5 | -0.9 | -0.8 | -7.6 | -5.1 | -0.1 | -0.1 |
| Operating margin | -1416.0% | -991.8% | | | -1903.7% | -592.1% | | |
| |
| Other income (expense): | | | | | | | | |
| Interest income (expense), net | 0.9 | 0.9 | | | -0.2 | -0.2 | | |
| Loss on fair value adjustment of warrant liability | | -0.3 | | | -1.0 | -0.1 | | |
| Loss on debt extinguishment | | | | | -0.7 | | | |
| (Loss) gain on fair value of strategic investments | 0.0 | 0.0 | | | 1.7 | -0.2 | | |
| Total other income (expense) | 0.9 | 0.6 | | | -0.2 | -0.6 | | |
| Net loss | -12.0 | -10.9 | -0.9 | -0.7 | -7.8 | -5.7 | -0.1 | -0.1 |
| |
| Net loss per share | | | | | | | | |
| Basic (in Dollars per share) | ($0.35) | ($0.40) | ($0.07) | ($0.05) | ($0.77) | ($0.62) | ($0.01) | |
| Diluted (in Dollars per share) | ($0.35) | ($0.40) | | | ($0.77) | ($0.62) | | |
| |
| Weighted-average shares used in computing net loss per share, basic (in Shares) | 34.6 | 27.6 | 16.4 | 13.7 | 10.1 | 9.2 | 20.5 | 20.5 |
| Weighted-average shares used in computing net loss per share, diluted | 34.6 | | | | 10.1 | | | |
| |
| Comprehensive loss | | | | | | | | |
| Net loss | -12.0 | -10.9 | -0.9 | -0.7 | -7.8 | -5.7 | -0.1 | -0.1 |
| Unrealized loss on marketable securities | -0.1 | 0.0 | | | | | | |
| Comprehensive loss | -12.1 | -11.0 | | | -7.8 | -5.7 | | |