| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Sep-05-22 | Jun-30-22 | Jun-05-22 | Mar-31-22 |
| | 10-Q | 10-Q | 10-K | 10-Q | 8-K | 10-Q | 8-K | 10-Q |
| Net income | 1.1 | -11.3 | -18.4 | -11.6 | -11.6 | -17.4 | -17.4 | -20.3 |
| Depreciation and amortization | 0.3 | 0.7 | 0.7 | 0.5 | | 0.6 | | 0.6 |
| Change in working capital | | | 10.5 | | | | | |
| Other | | | 10.5 | | | | | |
| Other operating activities | -16.6 | -8.6 | -11.2 | -12.8 | | -4.8 | | -5.5 |
| Cash from operations | -15.2 | -19.3 | -18.4 | -24.0 | | -21.6 | | -25.2 |
| |
| Capital expenditures | 0.0 | 0.0 | 0.3 | 0.0 | | 0.7 | | -0.6 |
| Purchases of property and equipment | | | 0.3 | | | 0.7 | | -0.6 |
| Purchases of short-term investments | 12.7 | | | 12.9 | | 1.0 | | 10.5 |
| Purchases of short-term investments | 12.7 | | | 12.9 | | 1.0 | | 10.5 |
| Other cash from investing | -25.1 | 2.4 | 13.9 | -7.3 | | 37.7 | | 20.6 |
| Cash from investing | -12.4 | 2.4 | 14.2 | 5.7 | | 39.4 | | 30.5 |
| |
| Issuance of common stock, net | 0.3 | 1.5 | | | | | | |
| Other cash from financing | -1.3 | 25.1 | 5.4 | 0.1 | | 0.1 | | 0.8 |
| Cash from financing | -1.0 | 26.6 | 5.4 | 0.1 | | 0.1 | | 0.8 |
| |
| Free cash flow | -15.2 | -19.3 | -18.0 | -24.0 | | -21.0 | | -25.8 |
| Per share (diluted) | ($0.40) | ($0.52) | ($0.54) | ($0.72) | | ($0.63) | | ($0.79) |